Wine Yeast

A new, advanced formulation of Go-Ferm Go-Ferm Protect is a natural yeast nutrient that is added to the yeast hydration water before adding your selected yeast strain. Its complex formula provides your yeast with the proper sterols, unsaturated fatty acids and micronutrients needed to begin fermentation in optimal shape. The great thing about Go-Ferm Protect is that the proper nutrients and vitamins are introduced BEFORE the yeast is added to the must. This way 100% of the nutrients are available to your selected yeast strain and won't be stolen away by any indigenous yeast or bacteria that may be present in the must before your yeast can become established. Go-Ferm Protect was created as a result of a multi-year study of problem fermentations by Lallemand and the National Agricultural Research Institute (INRA) in France. During this period, they looked at the adverse effects on the yeast from overripe fruit (>28 Brix), low nutrient levels, overclarification of the juice and poor fruit quality (Botrytis, rot, high bacteria count, insecticide and fungicide residue). Their research showed that musts deficient in sterols and unsaturated fatty acids made yeast more susceptible to ethanol toxicity (high alcohol), osmotic shock (high sugar), temperature and others stress factors. In response to this data they created the NATSTEP (NATural STErol Protection) process that incorporated sterols, unsaturated fatty acids, as well as vitamins and minerals into an advance yeast hydration nutrient: Go-Ferm Protect. Go-Ferm Protect provides a combination of protective and nutritional benefits that ensure your yeast begins your fermentation in peak form! The best part is that if your fruit is in great shape then Go-Ferm Protect will simply help your yeast out that much more! Go-Ferm Protect does not contain any DAP, as DAP is harmful to the yeast during the rehydration process. GO-Ferm is usually used in conjunction with our Fermaid K yeast nutrient; where Go-Ferm Protect is used at yeast hydration then Fermaid K is added at the first signs of fermentation and again after 1/3 sugar depletion. Use: Use at a rate of 1.25 g Go-Ferm Protect per 1 g of yeast. A rough approximate of weight is 1 tsp = 3.2 grams. We highly recommend using a scale to weigh the product for an accurate dose. We do not recommend relying on these rough conversions for accurate dosage rates. Click Here for a copy of MoreWine!'s Guide to Yeast Rehydration Like Go Ferm Protect? Then you will love CellarScience® FermStart!

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Fermaid K – Complete Yeast Nutrient for Strong, Clean Fermentations Provides a balanced blend of organic and inorganic nitrogen to support vigorous yeast growth Delivers consistent fermentation kinetics and helps prevent sluggish or stuck ferments Reduces the risk of off-aromas such as hydrogen sulfide by supporting healthy yeast metabolism Enhances fermentation security, especially in high-sugar musts or stressful conditions More immediately available YAN than Fermaid O due to its inclusion of diammonium phosphate (DAP) Fermaid K is a widely used yeast nutrient developed by Lallemand to support strong, reliable alcoholic fermentations. It contains a combination of inactivated yeast (for organic nutrients) and diammonium phosphate (DAP) to supply both slow- and fast-release nitrogen. This dual-action profile provides yeast with the nutrients they need throughout the growth phase and active fermentation, improving cell viability, reducing fermentation stress, and minimizing the formation of undesirable sulfur compounds. Fermaid K is especially effective in fermentations that begin with low YAN, high sugar content, or other challenging conditions that demand immediate nitrogen availability. Fermaid K contributes approximately 1 ppm of measurable YAN for every gram per hectoliter used. That means: 1 gram per liter adds 100 ppm of YAN 1 gram per gallon adds approximately 378 ppm of YAN In comparison, Fermaid O contains only organic nitrogen and provides about 0.4 ppm measurable YAN per gram per hectoliter, or 40 ppm per gram per liter, and 151 ppm per gram per gallon. Fermaid O is preferred for slower, more controlled fermentations or when avoiding inorganic nitrogen is important. Fermaid K is ideal when rapid yeast growth and fermentation speed are critical. Protocol Rehydrate yeast first, then add Fermaid K at the end of the lag phase (typically around 24–48 hours after inoculation or at approximately 1/3 sugar depletion). Suspend in 10 times its weight of clean must or water, stir thoroughly, and add to the fermenting must with adequate mixing. Avoid adding at the same time as sulfites or enzymes. Usage Rates Recommended dosage: 20–40 grams per hectoliter = 0.2–0.4 grams per liter = 0.76–1.5 grams per gallon Adjust dosage based on initial YAN content, fermentation conditions, and yeast strain requirements. Use higher rates in low-YAN musts or high Brix ferments to maintain healthy yeast activity throughout. Comparing the Yeast Available Nitrogen contribution of Fermaid K vrs Fermaid O If you add 1 gram per liter of Fermaid K, it contributes 100 ppm of YAN. If you add 1 gram per gallon of Fermaid K, it contributes approximately 378 ppm of YAN. If you add 1 gram per liter of Fermaid O, it contributes 40 ppm of YAN (Yeast Assimilable Nitrogen). If you add 1 gram per gallon of Fermaid O, it contributes approximately 151 ppm of YAN.   A rough approximate of weight is 1 tsp = 4.7 grams. We highly recommend using a scale to weigh the product for an accurate dose. We do not recommend relying on these rough conversions for accurate dosage rates.  

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Due to high demand, the 10 kg is currently out of stock. Be the first to receive your items by placing a pre-order today. We will automatically ship this to you when we receive more inventory. Fermaid O is a newer formulation of the same Fermaid K that winemakers everywhere have learned to trust their ferments to. The main difference in composition between the two, is that the Fermaid O has replaced the inorganic DAP with an organic source. In terms of how this benefits the winemaker, there are several points! Features: Organic Nitrogen is easier for your yeast to digest, resulting in a smoother, more consistent fermentation. Fewer fermentation spikes means better yeast health, and the ability to ferment to its full capacity. Compared to DAP, Fermaid O will result in lower heat output from the yeast, and lower levels of negative sulfur compounds. This is a nutrient which will boost the quality of wine, regardless of process. Lower heat production, less negative flavor compounds, better overall fermentation kinetics and flavors! To Use: Use at a rate of 1.5g / gal of must/juice. Like Fermaid O? Then you will love CellarScience® FermFed DAP Free Yeast Nutrient!

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Lalvin ICV D254 is the go-to choice for winemakers looking to produce wines with remarkable structure, rich mouthfeel, and intense aromatic complexity Whether crafting a powerful Cabernet, refining a lush Chardonnay, or enhancing a blended red, ICV D254 consistently delivers bold, layered wines with exceptional depth Enhance complexity and mouthfeel in premium wines Lalvin ICV D254 is a premium wine yeast strain selected for its ability to enhance mouthfeel, aromatic intensity, and flavor complexity. Known for its impact on color stability and tannin integration, ICV D254 produces wines with rich dark fruit, spice, and earthy notes, making it ideal for full-bodied reds and structured white wines. Enhanced Mouthfeel: Boosts polysaccharide production, contributing to a smooth, velvety texture. Aromatic Complexity: Promotes rich expressions of black cherry, plum, and dark chocolate in reds, and pear, honey, and vanilla in whites. Alcohol Tolerance: Effective up to 16% ABV, allowing for complete fermentation in high-sugar musts. Attenuation Rate: Typically achieves 85–90% attenuation, ensuring a well-structured, dry finish. Temperature Range: Performs optimally between 59°F (15°C) and 82°F (28°C), enhancing both aromatic expression and mouthfeel. Medium Flocculation: Settles well post-fermentation, contributing to clarity and ease of racking. Applications: Full-Bodied Red Wines: Perfect for Cabernet Sauvignon, Merlot, Syrah, and Zinfandel, promoting complexity and tannin integration. Barrel-Aged Reds: Enhances oak integration, providing deeper spice and toasted vanilla notes. White Wines: Ideal for Chardonnay and Viognier, contributing to a creamy mouthfeel and enhanced structure. Blended Reds: Suitable for GSM blends and Bordeaux blends, adding depth and mouth-coating richness. Flavor Profile:  Dark Fruits: Bold expressions of black cherry, plum, and blackberry dominate the palate. Spice & Earthiness: Subtle hints of cocoa, toasted oak, and leather add complexity. Creamy Mouthfeel: Enhanced polysaccharide production leads to a lush, smooth palate experience. Nutty & Vanilla Notes: When barrel-aged, promotes toasted almond and vanilla bean characteristics. Usage:  Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 95°F (35°C) for 15–20 minutes. Stir gently to prevent clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and mouthfeel enhancement. Nutrient Addition: Supplement with yeast nutrient to prevent sluggish fermentation, especially in high-Brix musts. Fermentation Temperature: Maintain between 59°F and 82°F to optimize ester formation and aromatic depth. Extended Maceration: Ideal for long maceration to deepen color, tannin complexity, and mouthfeel. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.  

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BDX is the yeast of choice for winemakers looking to craft bold, structured red wines with rich complexity and deep color Whether perfecting a Cabernet Sauvignon, enhancing the fruit-forward nature of Merlot, or refining a Bordeaux blend, BDX delivers consistency, elegance, and aging potential in every batch Enhanced structure and rich complexity for bold red wines BDX is a premium wine yeast strain specifically developed for full-bodied red wines that require enhanced structure, color stability, and aromatic complexity. Ideal for Bordeaux varietals, this strain excels at promoting deep color extraction and well-rounded tannin integration. Its robust fermentation capabilities ensure complete attenuation, even in high-sugar musts, while preserving the varietal characteristics and complexity of the wine. Deep Color Extraction: Promotes high anthocyanin stability for vibrant, long-lasting color. Enhanced Tannin Structure: Supports smooth tannin development and mouthfeel integration. Alcohol Tolerance: Effective up to 16% ABV, allowing for strong, full-bodied wines. Temperature Range: Performs optimally between 64°F (18°C) and 86°F (30°C), perfect for achieving rich complexity. High Flocculation: Contributes to excellent clarity post-fermentation. Minimal SO₂ Production: Reduces the risk of off-flavors, preserving natural aromatics. Applications Cabernet Sauvignon: Boosts boldness and enhances tannin structure for optimal aging. Merlot & Malbec: Promotes fruit intensity and smooth mouthfeel while enhancing complexity. Cabernet Franc: Elevates spice and berry notes with refined tannins. Bordeaux Blends: Perfect for crafting structured, age-worthy blends with balanced tannins and vibrant color. Flavor Profile Dark Fruit Expressions: Highlights blackberry, plum, and black cherry with layered depth. Spice and Tobacco Notes: Accentuates hints of black pepper, cedar, and dark chocolate. Smooth Tannin Integration: Creates a well-rounded mouthfeel with structured complexity. Aging Potential: Supports development over time, enhancing depth and smoothness. Usage  Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 95°F (35°C) for 15–20 minutes. Stir gently to prevent clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and tannin extraction. Nutrient Addition: Supplement with yeast nutrients, particularly in low-nitrogen musts, to avoid sluggish fermentation. Fermentation Temperature: Maintain between 64°F and 86°F to promote deep color and structured tannins. Extended Maceration: Ideal for longer maceration periods to intensify flavor and tannin complexity. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Due to high demand, the 500 g is currently out of stock. Be the first to receive your items by placing a pre-order today. We will automatically ship this to you when we receive more inventory.     ICV-D21 is the ideal choice for winemakers seeking to craft structured, full-bodied wines with bold aromatics and enhanced mouthfeel Whether perfecting a Cabernet Sauvignon, enhancing the richness of Syrah, or adding depth to Chardonnay, ICV-D21 consistently delivers complexity, elegance, and age-worthiness in every bottle Enhanced mouthfeel and rich aromatics for structured red and white wines ICV-D21 is a robust wine yeast strain specially developed by the Institut Coopératif du Vin (ICV) for crafting full-bodied red and white wines with enhanced mouthfeel and complex aromatics. Known for its ability to optimize tannin extraction and promote rich color stability, ICV-D21 is ideal for producing age-worthy wines with layered depth and intense fruit expression. Its consistent fermentation kinetics ensure reliable attenuation and balanced structure in high-Brix musts. Enhanced Mouthfeel: Promotes a smooth, velvety texture with well-structured tannins. Aromatic Complexity: Boosts expressions of dark berries, plum, and subtle floral notes. Alcohol Tolerance: Effective up to 16% ABV, allowing for rich, full-bodied wine production. Temperature Range: Performs optimally between 64°F (18°C) and 86°F (30°C), providing flexibility for various winemaking styles. Medium Flocculation: Contributes to clarity and stability post-fermentation. Low SO₂ Production: Preserves aromatic purity and minimizes off-flavors. Applications: Cabernet Sauvignon: Enhances bold fruit expression and promotes structured tannins. Merlot: Boosts plum and cherry notes while improving mouthfeel. Syrah: Elevates dark fruit and peppery spice with deep color extraction. Grenache: Enhances ripe red fruit flavors with a smooth finish. Chardonnay: Promotes complexity and rounded mouthfeel with subtle floral accents. Flavor Profile:  Dark Fruits: Highlights blackberry, plum, and cherry with concentrated richness. Spice and Floral Notes: Accentuates hints of violet, licorice, and black pepper. Structured Tannins: Integrates smooth tannins for enhanced mouthfeel and aging potential. Aging Potential: Supports long-term aging, improving depth and complexity over time. Usage: Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 95°F (35°C) for 15–20 minutes. Stir gently to prevent clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and flavor development. Nutrient Addition: Supplement with yeast nutrients, particularly in low-nitrogen musts, to ensure complete fermentation. Fermentation Temperature: Maintain between 64°F and 86°F for optimal tannin extraction and aromatic development. Extended Maceration: Ideal for long maceration periods to intensify structure and deepen flavor complexity. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Lalvin EC1118 is a fermentation workhorse, ideal for any application requiring strong performance, high alcohol tolerance, and minimal flavor interference Its reliability under stress makes it a staple in both home and commercial fermentations where consistency is critical Versatile, robust yeast for clean and complete fermentations Lalvin EC1118 is a highly reliable and neutral yeast strain, originally isolated from the Champagne region. Renowned for its strong fermentation kinetics and high alcohol tolerance, EC1118 is widely used in sparkling wine production, secondary fermentations, ciders, fruit wines, and distillation mashes. Its clean fermentation profile ensures the preservation of varietal and fruit character, making it a staple for winemakers seeking consistency and purity. Key Features: Alcohol Tolerance: Up to 18% v/v, suitable for high-alcohol fermentations. Fermentation Temperature Range: 10–30°C (50–86°F), allowing flexibility across various fermentation conditions. Killer Factor: Killer positive, inhibiting many wild and sensitive yeast strains, aiding in maintaining fermentation dominance. Nutrient Requirements: Low to moderate; benefits from complex nutrients in low-nitrogen musts or high-alcohol applications. Flocculation: Low to medium, resulting in compact lees and improved clarity. SO₂ Production: Low to moderate, minimizing the need for additional sulfur dioxide additions. H₂S Production: Low, reducing the risk of off-odors. Fermentation Profile & Flavor Contribution EC1118 is prized for its neutral sensory impact, producing very few esters or higher alcohols. This clean profile allows the varietal character, terroir expression, or adjunct flavors (in cider or fruit fermentations) to shine through. It is known to minimize the perception of residual sweetness due to its ability to ferment to dryness even under stressful conditions. While not typically chosen for aromatic complexity, EC1118 produces a subtle spectrum of fermentation-derived volatiles such as ethyl esters and low levels of isoamyl alcohol under certain conditions. It has low volatile acid production and is particularly good at suppressing undesirable wild microbes. Applications: Sparkling Wines & Traditional Method (Méthode Champenoise): Due to high pressure and alcohol tolerance. Stuck Fermentations: Excellent restart yeast thanks to its resilience and killer activity. Ciders: Clean fermenter that allows fruit expression and can handle cold temperatures. Fruit Wines: Neutral character supports delicate fruit aromas without masking them. Distillation Ferments: High attenuation and ethanol yield. Mead: Strong fermenter in low-nutrient environments when supplemented properly. Beer (Hybrid Styles): Occasionally used in brut-style beers or for attenuation of residual sugars in high-gravity ales. Flavor Profile: Neutral Base: Minimal sensory contribution, allowing primary ingredients to dominate. Enhanced Freshness: May enhance the perception of dryness and freshness. Clean Finish: Very low ester and fusel production, resulting in a crisp and reliable finish. Usage: Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 35–40°C (95–104°F) for 15–20 minutes. Stir gently to avoid clumping. Pitch Rate: Use 0.2–0.4 grams per liter (1–1.5 grams per gallon) for optimal fermentation and flavor development. Nutrient Addition: Supplement with yeast nutrient to enhance fermentation kinetics and prevent sluggish behavior, especially in high-sugar or low-nitrogen musts. Fermentation Temperature: Maintain between 10°C and 30°C (50°F and 86°F) to optimize fermentation performance and preserve desired flavor profiles. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Italian isolate that is recommended primarily for Sangiovese and extended maceration wines. A slow starter and moderate fermenter, BM45 has high nutritional needs and therefore should be used in conjunction with Go-Ferm (AD342) and Fermaid K (AD345) in order to minimize H2S production. BM45 contributes higher acidity, low astringency, and due to its' high levels of polysaccharide production, resultant wines have great mouthfeel and improved color stability. In addition, it can also be used to minimize vegetal characteristics that may be present in the fruit. In red wines, BM45 brings out aromas described as fruit jams, rose petals and cherry liqueur, with notes of sweet spices, licorice and cedar. While this makes it perfect for creating traditional Italian wine styles, BM45 also excels in Cabernet Sauvignon. When making white wines, some producers use this yeast on Chardonnay as a blending component to increase mouthfeel, but care for proper nutrients must be taken. It should be noted that BM45 may produce a "gamey" quality immediately post alcoholic fermentation, that will age out in about 6 months. Best results from 64 to 82 degrees F, with an alcohol tolerance up to 16%. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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RP15 is the yeast of choice for winemakers seeking to craft powerful, fruit-driven red wines with structured tannins and bold character Whether perfecting a Cabernet Sauvignon, enhancing the richness of Zinfandel, or deepening the complexity of Syrah, RP15 consistently delivers boldness, clarity, and exceptional flavor intensity Enhanced fruit intensity and structured tannins for bold red wines RP15 is a powerful red wine yeast strain specifically selected for its ability to amplify fruit intensity while supporting structured tannin development. Ideal for crafting big, full-bodied reds, RP15 promotes deep color extraction and emphasizes rich, dark fruit aromatics. Its robust fermentation kinetics ensure complete attenuation, even in high-Brix musts, delivering wines with vibrant complexity and age-worthiness. Fruit-Driven Aromatics: Boosts expressions of blackberry, black cherry, and plum, enhancing depth and richness. Enhanced Tannin Structure: Promotes smooth, well-integrated tannins for improved mouthfeel. Alcohol Tolerance: Effective up to 16% ABV, providing stability for high-alcohol wines. Temperature Range: Performs optimally between 64°F (18°C) and 86°F (30°C), allowing for versatile fermentation conditions. Medium to High Flocculation: Contributes to clarity and stability post-fermentation. Low SO₂ Production: Minimizes sulfurous off-flavors, preserving fruit purity. Applications: Cabernet Sauvignon: Elevates boldness and structure while enhancing dark fruit notes. Zinfandel: Highlights spicy characteristics with deep berry undertones. Syrah & Petite Sirah: Enhances complexity with intense fruit and structured tannins. Merlot: Brings forward lush plum and cherry while smoothing tannins for a balanced finish. Flavor Profile:  Dark Fruits: Prominent expressions of blackberry, black cherry, and plum. Spice and Earthiness: Accentuates subtle hints of black pepper, tobacco, and cedar. Smooth Tannin Integration: Balances structure with a rounded mouthfeel. Aging Potential: Supports long-term aging, improving depth and complexity over time. Guidelines: Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 95°F (35°C) for 15–20 minutes. Stir gently to prevent clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and tannin extraction. Nutrient Addition: Supplement with yeast nutrients, particularly in high-Brix musts, to support strong fermentation. Fermentation Temperature: Maintain between 64°F and 86°F to maximize fruit expression and tannin development. Extended Maceration: Suitable for long maceration periods to boost color intensity and mouthfeel.   Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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ICV-D47 is the ideal choice for winemakers looking to craft full-bodied white wines and meads with rich aromatics and smooth mouthfeel Whether perfecting a Chardonnay, enhancing the vibrancy of a Viognier, or crafting a smooth mead, ICV-D47 delivers exceptional clarity, balance, and complexity in every bottle Rich aromatics and enhanced mouthfeel for full-bodied whites and mead ICV-D47 is a premium wine yeast strain developed by the Institut Coopératif du Vin (ICV), renowned for its ability to produce full-bodied, aromatic white wines and exceptional meads. This strain excels in accentuating floral and fruit esters while contributing to a rich, smooth mouthfeel. Its steady fermentation kinetics and strong polysaccharide production result in wines with enhanced viscosity and clarity. Enhanced Aromatics: Boosts expressions of citrus, tropical fruit, and floral notes. Rich Mouthfeel: Contributes to a fuller body with smooth, creamy texture. Alcohol Tolerance: Effective up to 14% ABV, making it ideal for both whites and meads. Temperature Range: Performs optimally between 59°F (15°C) and 77°F (25°C), ensuring clean fermentation and aromatic preservation. Medium Flocculation: Promotes good clarity and stable sedimentation post-fermentation. Low SO₂ Production: Maintains fresh aromatics and minimizes sulfur-based off-flavors. Applications: Chardonnay: Enhances notes of citrus, melon, and light tropical fruit with a rich mouthfeel. Viognier: Promotes intense floral and apricot aromas, highlighting varietal character. Sauvignon Blanc: Accentuates bright fruit flavors with a crisp, clean finish. Mead: Ideal for traditional and melomel meads, contributing to smooth body and balanced sweetness. Fruit Wines: Perfect for apple, peach, and pear wines with vibrant fruit expression. Flavor Profile: Citrus and Tropical Fruits: Prominent notes of pineapple, lemon, and grapefruit. Floral Aromatics: Subtle hints of honeysuckle, jasmine, and orange blossom. Smooth Mouthfeel: Contributes to a creamy, well-rounded body with excellent clarity. Clean Finish: Low SO₂ production preserves fruit purity and aromatic intensity. Usage: Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 95°F (35°C) for 15–20 minutes. Stir gently to prevent clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and mouthfeel enhancement. Nutrient Addition: Supplement with yeast nutrients, particularly in low-nitrogen musts, to optimize fermentation strength. Fermentation Temperature: Maintain between 59°F and 77°F to preserve floral aromatics and mouthfeel. Aging Potential: Suitable for short- to medium-term aging, allowing for aromatic development. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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ICV-D80 was isolated by Dominique Delteil of the ICV in 1992 from the Cote Rotie area of the Rhone Valley. In addition to its' ability to enhance tannin structure, it's know for being able to ferment musts high in sugar and polyphenols. With proper nutrition, aeration and fermentation temperatures below 82 degrees F, ICV-D80 will ferment up to 16% alcohol. ICV-D80 brings high fore-mouth volume, big mid-palate mouthfeel and intense fine grain tannin to reds. It is one of the best strains for contributing big tannin volume in a blend. ICV-D80 is characterized by concentrated, dark fruit, smoke and a licorice finish. When blended with wines fermented with ICV-D254 or Syrah, wines fermented with ICV-D80 bring more tannin intensity to the blend. In short, this yeast is truly great for the structural support it can bring to a wine. However, if the winemaker is looking for highlighted fruit and ethereal top-notes as well, it often may not be the best choice when using a single strain in the vintage. Therefore, it may help to think of it as usually needing a companion strain to help bring everything to a finished wine. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Syrah is the perfect choice for winemakers aiming to craft powerful, structured red wines with bold fruit expression and deep color stability Whether perfecting a Syrah/Shiraz, boosting the intensity of Cabernet Sauvignon, or refining a GSM blend, Syrah Yeast delivers exceptional flavor, structure, and age-worthiness in every batch Bold structure and intense aromatics for rich, full-bodied reds Syrah is a specialized wine yeast strain meticulously selected to bring out the bold structure and vibrant aromatics characteristic of Syrah and other robust red wines. Renowned for its ability to enhance color stability, deepen tannin integration, and highlight dark fruit notes, Syrah Yeast is the ideal choice for crafting powerful, age-worthy wines. Its controlled fermentation kinetics ensure balanced attenuation, minimizing off-flavors while preserving the wine’s natural complexity. Enhanced Color Stability: Promotes deep anthocyanin extraction for rich, lasting color. Tannin Development: Integrates structured tannins for a smooth, full-bodied mouthfeel. Alcohol Tolerance: Effective up to 16% ABV, supporting the creation of high-alcohol red wines. Temperature Range: Optimally ferments between 64°F (18°C) and 86°F (30°C), allowing for full expression of bold flavors. High Flocculation: Contributes to clarity and stability post-fermentation. Low SO₂ Production: Preserves fruit purity and aromatic intensity. Applications Syrah/Shiraz: Elevates bold black fruit flavors, peppery spice, and deep color. Cabernet Sauvignon: Enhances structure and tannin integration for age-worthy complexity. Grenache: Promotes ripe berry notes with smooth tannins. Malbec: Boosts dark fruit intensity and earthy undertones. Blended Reds: Perfect for GSM (Grenache, Syrah, Mourvèdre) blends, enhancing body and color. Flavor Profile  Dark Fruits: Prominent expressions of blackberry, plum, and dark cherry. Spice and Earthiness: Accentuates hints of black pepper, leather, and subtle tobacco. Full-Bodied Mouthfeel: Enhances the structure and richness of the wine. Aging Potential: Supports long-term aging, improving depth and complexity with time. Usage  Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 95°F (35°C) for 15–20 minutes. Stir gently to prevent clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and tannin development. Nutrient Addition: Supplement with yeast nutrients, particularly in high-sugar musts, to ensure complete fermentation. Fermentation Temperature: Maintain between 64°F and 86°F for optimal color extraction and structured tannin formation. Extended Maceration: Ideal for long fermentations to deepen color and enhance tannin complexity. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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MT was selected in Saint Emilion by the ITV Bordeaux and Martin Vialatte Oenologie in collaboration with the INRA Montpellier for its' ability to enhance varietal fruit and floral aromas, along with strawberry jam, caramel, and spice notes. Although highly recommended for Merlot and Cabernet Sauvignon, MT also does well in most red programs where a "soft, fresh bowl of berries" element is needed/desired either by itself or as part of a blend. Wines made with MT show good colour stability along with enhanced tannic structure and rich mouthfeel, making MT an ideal compliment to winemaking styles destined for aging. Although MT's fermentation kinetics are steady and its' alcohol tolerance is fairly high, it will still benefit from a balanced nutrient strategy, especially in musts with low available nitrogen and a high potential alcohol. Best results from 59 to 90 degrees F, with an alcohol tolerance to 15%. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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BM 4x4 is a new yeast blend created by Lallemand, designed to provide all of the benefits and flavors of the BM45 yeast strain, along with a much more reliable and consistent fermentation. This means that you'll be getting all of the flavors of jam, rose petals, and cherry liquor with a stronger fermentation with less risk of a stuck or sluggish fermentation. This is a blend between the traditional BM45 and a complimentary strain, chosen for its fermentation kinetics. Positive interaction between these strains means a more dependable fermentation, along with increased aromatic intensity, color intensity, and length of finish. Ideal fermentation temperature is between 64-82°F. This strain will enhance varietal character, and mouthfeel in a wine. Alcohol tolerance is 15%. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Lalvin RC212 is the premier choice for winemakers looking to produce structured, full-bodied red wines with exceptional color and aromatic depth Whether perfecting a classic Burgundy-style Pinot Noir, crafting a bold Merlot, or refining a smooth Gamay, RC212 consistently delivers elegance, balance, and rich complexity Provides enhanced structure and color in Pinot Noir Lalvin RC212 is a renowned wine yeast strain, originally selected from the Burgundy region of France by the Bureau Interprofessionnel des Vins de Bourgogne (BIVB). It is specifically chosen for its ability to enhance color stability, tannin structure, and aromatic complexity in red wines, particularly Pinot Noir. RC212 promotes the development of ripe berry, bright fruit, and spicy characteristics, making it ideal for crafting robust, age-worthy red wines. Enhanced Color Stability: RC212 promotes deep anthocyanin extraction and color intensity in red wines, protecting color due to low absorbance rates onto yeast cell walls. Rich Tannin Structure: Supports smooth, well-integrated tannins that age gracefully. Alcohol Tolerance: Effective up to 16% ABV, allowing for complete fermentation in high-sugar musts. Attenuation Rate: Typically achieves 85–90% attenuation, ensuring a full, structured finish. Temperature Range: Performs optimally between 64°F (18°C) and 86°F (30°C), perfect for developing rich, full-bodied reds. Medium Flocculation: Settles well post-fermentation, contributing to clarity and stability. Applications: Pinot Noir: Perfectly suited for Burgundy-style Pinot Noir, enhancing its delicate fruit and silky tannins. Merlot & Cabernet Franc: Boosts structure and body, delivering rich fruit and spice. Gamay: Highlights fresh berry notes while enhancing tannin integration. Blended Reds: Suitable for Bordeaux blends and GSM (Grenache, Syrah, Mourvèdre), bringing forward lush fruit and balance. Flavor Profile: Dark Fruits: Prominent expressions of black cherry, plum, and raspberry. Spice & Earthiness: Subtle hints of cinnamon, clove, and forest floor. Silky Mouthfeel: Enhances the smoothness and roundness of the palate. Aging Potential: Promotes tannin development for wines that improve with time. Usage: Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 95°F (35°C) for 15–20 minutes. Stir gently to prevent clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and color development. Nutrient Addition: Supplement with yeast nutrient to optimize fermentation strength, particularly in high-Brix musts. Fermentation Temperature: Maintain between 64°F and 86°F to optimize color extraction and tannin structure. Extended Maceration: Ideal for long maceration periods to deepen color and enhance tannin complexity. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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For easy-to-drink Rhone style wines. This versatile strain is suitable for reds, roses and whites. In red wines, it contributes up front fruit to easy-to-drink Rhone style wines, often with a nice spicy quality if present in the fruit. ICV-GRE can also be effectively used with short skin contact regimes (3 to 5 days) to reduce vegetal and undesirable sulfur components in varietals like Merlot, Cabernet, Grenache and Syrah. In addition to bringing fresh, ripe fruit qualities, ICV-GRE also helps to enhance the mouthfeel of a wine. While it may not be a powerhouse in itself, this yeast truly excels at being able to keep a red wine blend from potentially becoming too heavy and pedestrian. When used in fruit focused whites like Chenin blanc, Riesling, and Viognier, ICV-GRE results in stable fresh fruit characteristics and delivers a big fore-mouth impact. Alcohol tolerant to 15%, best results from 59 to 82 degrees F. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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BA11 was selected in 1997 near Estacao Vitivinicola de Barraida in Portugal. It has excellent fermentation kinetics, even at low temperatures. It promotes clean, aromatic, estery characteristics during fermentation. BA11 intensifies mouthfeel and augments lingering flavors in both still and sparkling white wines. BA11 encourages the fresh fruit aromas of orange blossom, pineapple and apricot. In relatively neutral white varieties BA11 brings out tropical fruit, cream, vanilla and spice. With fruit from hot climates, BA11 can really help to "flesh out" a wine by its' volume and mouthfeel enhancement. This strain is good by itself, as well as being a great structural component to a blend. Best results from 50 to 77 degrees F, and alcohol tolerant to 16%. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Due to high demand, the 500 g is currently out of stock. Be the first to receive your items by placing a pre-order today. We will automatically ship this to you when we receive more inventory.   Rhone 4600 is a Cote du Rhone isolate that has a short lag phase, low nutrient demand, and has the ability to ferment well at low temperatures. Due to its' high level of polysaccharide production, Rhone 4600 contributes intense mouthfeel and volume to a finished wine. In addition, Rhone 4600 helps create complex aromatic notes along with a high degree of ester production. In whites like Viognier, Marsanne, Roussane, and Chardonnay there is an emphases on pineapple, pear, and apple. When used in Roses made from Mouvedre, Grenache and Syrah, intense, elegant, fresh strawberry becomes the focus. While Rhone 4600 is good for white wine production, it is an excellent yeast for making Roses either by itself or as part of a blend. Best results from 56 to 72 degrees F, with an alcohol tolerance to 15%. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Diammonium Phosphate (DAP). A source of nitrogen for yeast. Use .5 - .75 grams per gallon (1/2 tsp per 5 gallons) of must to aid yeast and help reduce later problems with hydrogen sulfide. There is a superior nutrient regimen (using Go-Ferm and Fermaid K) for wine making: Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast and a recommended nutrient addition. A rough approximate of weight is 1 tsp = 3.1 grams. We highly recommend using a scale to weigh the product for an accurate dose. We do not recommend relying on these rough conversions for accurate dosage rates.

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Start your fermentation right with FermStart by CellarScience®.  FermStart is a concentrated, micronutrient blend that helps yeast during the critical phase in which they transition from dried and dormant back into healthy and active.  FermStart is added to your rehydration water so that your yeast absorbs the nutrients as they absorb the water.  Rehydrating with FermStart prior to pitching your yeast also has the added benefit of allowing the yeast access to the nutrients before wild yeast in the must can uptake them.    Rehydrating with FermStart = Healthy Yeast Rehydrating your yeast is always recommended but is considered especially important at any Brix level above 14.  Rehydrating with FermStart is the gold level of hydration and helps protect your yeast against initial osmotic pressures, competition from wild yeast, and alcohol toxicity.  Proper hydration and healthy yeast have also shown to have a positive impact on flavor.     How Much? FermStart is a super concentrated formula, which is very convenient when you are rehydrating large amounts of yeast.  Use 1 gram of FermStart for every 4 grams of yeast.  We offer some suggested ranges for the amount of water to use below.     Examples: 8g yeast – Add 2g FermStart to 30-50ml of water 80g yeast – Add 20g FermStart to 300-400ml of water 500g yeast – Add 125g FermStart to 1500-2000ml of water   The Science of How it Works FermStart is rich in readily assimilable amino acids, sterols, vitamins, and natural glutathione.  Readily assimilable means that the size of the molecules present in FermStart are all extremely small and easily absorbed by the yeast cell. This is obtained by centrifuge and allows FermStart to be extremely concentrated and not contain filler.   The availability of readily assimilable amino acids allows the yeast cell to skip the step in which amino acids would be synthesized within the cell. This saved energy is instead directed into multiplication. Faster yeast cell multiplication means a faster fermentation start, allowing your yeast to out-compete wild yeast. Wild yeast have unknown flavors and fermentation behavior, so it is important to give your selected yeast the best chance to dominate the fermentation.    Sterols help the cell membrane regain and maintain elasticity helping to ensure a perfect start and continued performance throughout the fermentation. The strong cell membrane helps ensure that the yeast can survive and complete alcoholic fermentation under tough conditions.   Glutathione is a very special natural antioxidant and detoxifier made up of three amino acids – cysteine, glutamate, and glycine.  It is extremely important for maintaining intracellular health by preventing damage to cellular components during the very oxidative process of rehydration.      FermStart does not contain nitrogen which is detrimental to the yeast cell during hydration. Nitrogen can be added through the addition of FermFed or FermFed DAP free nutrients at the first signs of fermentation.  Another addition is then added at 1/3 sugar depletion to complete a total fermentation nutrient schedule.       For a full yeast nutritional plan, use FermStart when rehydrating your yeast, FermFed DAP Free at the onset of fermentation, and FermFed after 1/3 sugar depletion.  

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Lalvin DV10 is the ideal choice for winemakers dedicated to producing elegant sparkling wines and bright, crisp still whites with clean aromatics and refined structure Whether perfecting a classic Champagne, refining a crisp Chardonnay, or creating a beautifully structured sparkling wine, DV10 guarantees clarity, balance, and exceptional quality Precision, stability, and clean fermentation for premium sparkling and still wines Lalvin DV10 is a robust and versatile yeast strain, originating from the Champagne region of France. Renowned for its clean fermentation profile and high alcohol tolerance, DV10 is ideal for producing sparkling wines, Champagne, and crisp still whites. Its consistent performance under challenging conditions makes it a preferred choice for winemakers seeking reliability and clarity in their wines . Clean Fermentation Profile: Produces minimal volatile acidity and low hydrogen sulfide (H₂S), preserving pure fruit character and aromatic clarity. High Alcohol Tolerance: Effective up to 18% ABV, supporting complete fermentation in high-sugar musts. Temperature Range: Performs optimally between 50°F (10°C) and 95°F (35°C), suitable for both cold fermentations and warm climates. Attenuation Rate: Typically achieves 85–90% attenuation, ensuring a crisp, dry finish. Low SO₂ Production: Maintains bright, clean aromatics with minimal sulfite interference. High Flocculation: Settles efficiently post-fermentation, ensuring bright clarity. Applications: Sparkling Wines: Perfect for Méthode Traditionnelle, Charmat Process, and Pet-Nat styles, delivering fine bubbles and crisp aromatics. Champagne Production: Reliable under high pressure and low temperatures, producing elegant mousse and clean expression. Still Whites: Ideal for Chardonnay, Sauvignon Blanc, and Pinot Grigio, preserving bright fruit and crisp acidity. High-Alcohol Fermentations: Excellent for fortified wines and late-harvest styles, with complete sugar conversion and balanced structure. Flavor Profile:  Crisp Apple & Citrus: Sharp notes of green apple, lemon zest, and grapefruit dominate the palate. Mineral Freshness: Subtle minerality that enhances clean mouthfeel and bright finish. Floral & Light Herbaceous Notes: Delicate hints of white blossom and cut grass contribute to aromatic lift. Bright, Crisp Finish: Ensures a clean, refreshing palate with high clarity and purity. Usage: Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 104°F (40°C) for 15–20 minutes. Stir gently to prevent clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and flavor development. Nutrient Addition: Supplement with yeast nutrient to optimize fermentation strength, especially in high-Brix musts. Fermentation Temperature: Maintain between 50°F and 95°F to optimize ester formation and maintain aromatic clarity. Secondary Fermentation: Perfect for bottle conditioning and sparkling wine production, supporting fine bubbles and bright clarity. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Lalvin K1 (V1116) is the perfect choice for winemakers aiming to craft fresh, aromatic white wines and vibrant fruit-based fermentations Whether perfecting a crisp Chenin Blanc, crafting a sparkling wine, or fermenting a bright fruit wine, K1 (V1116) delivers unmatched clarity, brightness, and aromatic intensity in every batch Enhance freshness and aromatic intensity in white wines and fruit fermentations Lalvin K1 (V1116) is a robust and versatile wine yeast strain, selected by the Institut Coopératif du Vin (ICV) in Montpellier, France. Renowned for its strong fermentation kinetics and high ester production, K1 (V1116) is ideal for crafting crisp white wines, sparkling wines, and fruit-based fermentations. Its resilience under challenging conditions makes it a reliable choice for both professional and home winemakers. High Ester Production: Enhances floral and fruity aromas, including notes of apple, citrus, and tropical fruits. Cold Fermentation Tolerance: Performs well at low temperatures, preserving delicate aromatics. Alcohol Tolerance: Effective up to 18% ABV, allowing for complete fermentation in high-sugar musts. Fermentation Range: Operates optimally between 50°F (10°C) and 95°F (35°C), providing flexibility across various wine styles. Low Nutrient Requirements: Thrives in musts with low nutrient content, reducing the need for supplementation. Low H₂S and SO₂ Production: Ensures clean fermentations with minimal off-flavors. Applications: White Wines: Sauvignon Blanc, Chenin Blanc, Riesling, and Pinot Grigio, where bright fruit and floral characteristics are desired. Sparkling Wines: Suitable for traditional method and Charmat process, promoting fine bubbles and crisp acidity. Fruit Wines: Enhances the natural fruit expression in apple, pear, peach, and berry wines. Mead and Cider: Promotes clean, crisp fermentations with bright aromatics. Flavor Profile:  Bright Citrus & Apple: Sharp notes of green apple, lemon zest, and lime. Tropical Fruit Hints: Subtle expressions of pineapple and passion fruit. Floral Undertones: Light notes of honeysuckle and orange blossom contribute to aromatic lift. Clean, Crisp Finish: Maintains a fresh, pure expression of fruit with minimal sulfur notes. Usage: Rehydration: Rehydrate in 10 times its weight of chlorine-free water at 95°F (35°C) for 15–20 minutes. Stir gently to avoid clumping. Pitch Rate: Use 1–1.5 grams per gallon (0.25–0.4 grams per liter) for optimal fermentation and flavor development. Nutrient Addition: While K1 (V1116) has low nutrient requirements, supplementation is recommended in low-nitrogen musts to prevent sluggish fermentation. Fermentation Temperature: Maintain between 50°F and 95°F to optimize ester formation and maintain clarity. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Clos is a yeast strain isolated from the Priorat region of Spain. Clos was chosen for its ability to re-enforce structure while emphasizing aromatic complexity and mouthfeel. Sweet red fruit (cherry), with pepper and chocolate notes are typical of what Clos brings to a fermentation. With hot climate/high Brix fruit, Clos is a great choice for its high alcohol tolerance (17%), low Nitrogen needs and short lag phase. Clos also does well with higher fermentation temperatures (max 95 F) and shows a good compatibility with MLF. Highly recommended for Syrah, Petite Syrah, Grenache, Tempranillo and Carignane. Click here for a PDF of the MoreWine Manual on re-hydrating wine yeast. Click here for a PDF of the MoreWine Yeast and Grape Pairing Guide.

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Feed your fermentation with FermFed DAP Free by CellarScience®. The 100% natural formulation of FermFed DAP Free is derived from the autolysis of very specific yeast strains naturally high in free amino acids, sterols, mannoproteins, zinc, magnesium, and niacin, along with vitamins B1, B2, B5, B6, and B12 for a complete yeast health regimen.  As the name suggests, this unique formulation does not contain the traditional inorganic diammonium phosphate, but does provide organically derived nitrogen. How Much Do I Add and When? The recommendation that covers most fermentations is to add 1.5 gram per gallon of FermFed DAP Free at the onset of fermentation and then add 1 gram per gallon of FermFed after 1/3 sugar depletion. Mix the nutrients in a small slurry of water and add to the fermentation.  Read more below if you are interested in measuring YAN (Yeast Available Nitrogen) and adjusting your nutrient schedule accordingly.   The Science of How it Works The different components of FermFed DAP Free work in different ways to feed and protect your yeast.   The complex and organic nitrogen in FermFed DAP Free helps eliminate excessive yeast growth in the initial phases, reducing fermentation heat spikes at the start of fermentation. Included sterols make the yeast membrane more resistant to alcohol and to high temperatures.  The collection of B-vitamins along with zinc and magnesium are essential for enzymatic activity, alcohol tolerance, and yeast health.  Mannoproteins help avoid the aromatic stripping during the fermentation by binding esters and terpenes and not allowing them to be driven off by CO2.  The included yeast hull components act as receptors to bind up fatty acids that can accumulate and cause stuck fermentations. Advanced - Adjusting Your Nutrient Schedule Based on YAN (Yeast Available Nitrogen) In addition to the nutrients provided by FermFed or FermFed DAP Free, yeast need a certain level of nitrogen to perform adequately. If deprived of nitrogen, yeast are more likely to produce off flavors, most notably hydrogen sulfide. When added at the rate of 1 gram per gallon, FermFed provides 38ppm of YAN while FermFed DAP Free adds 20ppm when added at the rate of 1.5 gram per gallon.    How much YAN do you need? Acceptable levels range from 175 to 300ppm.  YAN levels in grapes vary, with grapes from warmer climates often having less. The best practice is to measure your grapes using a commercial wine lab or the Vinmetrica YAN Test Kit along with a Vinmetrica Meter. If you know your YAN the following is a good general guide: 175ppm or above = FermFed DAP Free @ onset + FermFed DAP Free @ 1/3 completion (adds 40ppm YAN) 150ppm or above = FermFed DAP Free @ onset + FermFed @ 1/3 completion (adds 58ppm YAN) 125ppm or above = FermFed @ onset + FermFed @ 1/3 completion (adds 72ppm YAN) Below 125ppm = FermFed @ onset + FermFed @ 1/3 completion + extra DAP    For a full yeast nutritional plan, use FermStart when rehydrating your yeast, use FermFed DAP Free at the onset of fermentation, and use FermFed after 1/3 sugar depletion.  

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