Wine Yeast, Malolactic Bacteria & Additives

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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Potassium Metabisulfite, (often referred to as "SO2", "sulfites" "meta", or "meta-bi") has several uses in winemaking. At the crush, sulfites are generally used to help control the spoilage bacteria and indigenous yeast that may already be present both on the fruit and in the winery (i.e. on the picking bins, processing equipment, tanks, tubing, etc). The amount generally used is enough to inhibit most of the unwanted organisms but not enough to hinder a cultured yeast, which has a higher tolerance to sulfites than most of the indigenous organisms do. This inhibition effectively "wipes the slate clean" for the cultured yeast to step in and rapidly colonize the must so that it can effectively dominate the subsequent fermentation. In addition, sulfites also help to inhibit the enzymatic browning of both musts and finished wines so that all of their delicate complexities can be preserved. Later, during storage and in the bottle, sulfites at the proper levels will further protect a wine by continuing to inhibit spoilage organisms, as well as by scavenging oxygen. Note that the exact amount needed to effectively do the job is determined by the pH of the wine. Refer to our MoreManuals! on Red or White Winemaking or one of the winemaking books that we offer for a complete explanation on how to properly manage sulfites. In addition, it's important to keep in mind that free SO2 levels fall faster in wood cooperage than in glass or stainless, so if you are using a barrel you will most likely need to manage sulfite levels more closely. The most common form of Metabisulfite is as a powder which is fixed with potassium or sodium. 1/4 tsp of Potassium Metabisulfite adds 50ppm to 5 gallons of must. Old Metabisulfite loses potency with time and should be replaced every year to assure that you are getting correct levels. You can use old Metabisulfite to make solutions for sanitizing equipment.

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Acti-ML – Lallemand Nutrient Blend for Reliable Malolactic Fermentation Stimulates fast and complete malolactic fermentation in challenging wines Provides essential peptides, vitamins, and minerals to support Oenococcus oeni Reduces lag phase and promotes bacterial survival during MLF Helps avoid sluggish or stuck malolactic fermentation, especially in high-alcohol or low-pH wines Optimized for co-inoculation or sequential inoculation, with a formulation superior to generic yeast hulls Acti-ML is a complex nutrient blend developed by Lallemand to support the specific needs of malolactic bacteria during MLF. It is composed of yeast autolysates and naturally derived components rich in peptides, amino acids, vitamins, and minerals. These nutrients are critical for Oenococcus oeni, especially in conditions where nutrient content is limited or inhibitory compounds like alcohol, low pH, or SO₂ are present. Acti-ML shortens the lag phase and improves cell viability, helping ensure a strong and complete malolactic fermentation. Compared to simple yeast hulls or non-specific nutrients, Acti-ML is formulated specifically for malolactic bacteria, giving winemakers a more targeted and effective solution. Protocol Suspend Acti-ML in 10 times its weight of clean, chlorine-free water or wine at 20–25°C. Allow to hydrate for 5–10 minutes with gentle stirring. Add to the wine just before or at the time of malolactic bacterial inoculation. Compatible with both co-inoculation (24–48 hours after yeast inoculation) and sequential inoculation (after alcoholic fermentation is complete). Ensure thorough mixing in the tank. Usage Rates Recommended dosage: 20–40 grams per hectoliter = 0.2–0.4 grams per liter = 0.76–1.5 grams per gallon Use the lower end of the range for clean, balanced wines with moderate alcohol and the higher end for wines with elevated alcohol, low pH, or other stress factors.

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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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Opti'Malo Plus – Lallemand Nutrient for Strong, Secure Malolactic Fermentation Supports rapid and complete malolactic fermentation by enhancing Oenococcus oeni performance Provides a balanced supply of amino acids, minerals, and co-factors critical for bacterial health Reduces lag phase and improves survival of malolactic bacteria under stressful conditions Helps prevent sluggish or incomplete MLF in wines with low pH or high alcohol More effective than generic yeast hulls due to its targeted formulation and refined composition Opti'Malo Plus is a specific inactivated yeast nutrient developed by Lallemand to promote efficient malolactic fermentation. It delivers key micronutrients, peptides, and vitamins that are essential to the growth and metabolism of Oenococcus oeni, especially in conditions where nutrient deficiencies or inhibitors like alcohol and low pH are present. By stimulating faster cell adaptation and stronger bacterial activity, Opti'Malo Plus helps reduce the risk of sluggish or stuck malolactic fermentations. Compared to general-purpose yeast derivatives, Opti'Malo Plus is more targeted and efficient. Opti'Malo Plus differs from Lallemand’s Acti-ML in that it contains a more refined composition with higher concentrations of peptide fractions and co-factors that directly support the metabolic activity of Oenococcus oeni. While Acti-ML also promotes MLF by providing nutrients, it includes a broader mix of yeast hulls and autolysates designed more for cell survival. Opti'Malo Plus is better suited for wines under significant stress—such as low pH, high alcohol, or nutrient depletion—and offers enhanced performance for both co-inoculation and sequential inoculation strategies. Protocol Suspend Opti'Malo Plus in 10 times its weight of chlorine-free water or wine at 20–25°C. Allow to hydrate for 5–10 minutes with gentle stirring. Add to wine immediately before or at the time of malolactic inoculation. It may be used in co-inoculation (24–48 hours after yeast inoculation) or in sequential inoculation after alcoholic fermentation is complete. Mix thoroughly to ensure even distribution. Usage Rates Recommended dosage: 20–40 grams per hectoliter = 0.2–0.4 grams per liter = 0.76–1.5 grams per gallon Use the low end of the range in balanced wines with moderate alcohol and acidity. Increase up to high end in wines with low pH, high alcohol, or nutrient-depleted conditions to ensure full and secure malolactic fermentation.

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OptiRED – Lallemand Yeast Derivative for Color, Body & Tannin Integration in Red Wines Enhances early formation of polysaccharide–polyphenol complexes for more intense, stable color Rounds and smooths tannins to reduce harshness and astringency Builds fuller body and improved mouthfeel without altering varietal expression Can be used at the start or during fermentation for flexible control over tannin structure Outperforms generic inactivated yeast products by delivering high‑molecular‑weight mannoproteins via MEX™ processing OptiRED is a tailored inactivated yeast derivative produced by Lallemand using an innovative MEX™ method that makes high-molecular-weight polysaccharides immediately available in the must. When introduced early during maceration or alcohol fermentation, these compounds complex with freshly released anthocyanins and tannins, protecting color integrity and creating softer, more integrated tannin profiles. The result is a red wine with enhanced intensity, smoother palate, improved structural balance, and longer-term color stability—without over‑manipulating varietal character. This effect is particularly noticeable in light‑ to medium‑bodied reds or in vintages with lower phenolic maturity. Protocol Suspend the recommended dose in 10× its weight of clean must or water. Stir thoroughly to ensure full dispersion, then add at one of these points: • At the beginning of maceration or alcoholic fermentation for enhanced color protection and tannin integration • Toward the end of fermentation to smooth out persistent harshness without affecting initial extraction. Usage Rates Recommended dosage: 20–40 g per hectoliter = 0.2–0.4 g per liter = 0.76–1.5 g per gallon For standard use, 30 g/hL (0.3 g/L or ~1.14 g/gal) provides excellent balance between color enhancement and mouthfeel refinement. For home users a rough approximate of weight is 1 tsp = 2.6 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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MoreWine!'s Tartaric Acid is processed naturally in Europe from grapes and is the preferred acid for adjusting acid levels in wine. Be aware that a lot Tartaric Acid available to home winemakers is artificially made, comes from China, and does not integrate into the wine as well. Some of this tartaric includes the designation of "food-grade". Because MoreWine! packages this product you can be assured you are getting the highest winery-grade quality. 3.8g per gallon adjusts acidity by +.1%. As a note: some tartaric acid will drop out of suspension as potassium bitartrate if you are doing any cold stabilization. You might want to re-test total acidity after cold stabilization.

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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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Specially formulated enzyme preparation for improved color intensity and stability, greater mouthfeel, and enhanced fruity, floral, spicy flavors in wine. Used primarily in red wines for the aforementioned reasons, it can also be used in white wines for increased extraction (however we recommend Lallzyme C-Max for whites because it helps the solids settle out as well). Based on the activity of a blend of cellulases, hemicellulases, and pectinases, this preparation aids in the extraction, then stabilization of water soluble phenols found in cells of grape skins. A dry, granular product requiring no special storage conditions prior to use. We have used this enzyme on our wine here at MoreWine and found the difference to be nothing short of amazing. Currently only available at MoreWine in this size! To use dissolve Lallzyme EX into a sufficient amount of water (usual ration is 1:100) and add to must with your other additions prior to the onset of fermentation. Dosage is 0.1g Lallzyme per gallon of must. Store dry enzyme at room temperature, around  25 C° (77 F°). Once rehydrated use within a few hours.

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Selected for its outstanding ability to conduct fast malolactic fermentation in high alcohol red wine Direct inoculation, freeze-dried bacteria – does not require rehydration High numbers of active cells which ensure a quick start of fermentation Good for 66 gallons. Viniflora CH16 is a freeze-dried pure culture of Oenococcus oeni. This malolactic bacterium has been carefully selected to induce malolactic fermentation in red wine with high alcohol levels, after direct inoculation. Viniflora CH16 has been isolated from a 16% Petit shiraz wine in the Russian River area of California, USA. The bacterium's natural environment gives a good picture of its application; CH16 has been carefully selected for its outstanding ability to conduct fast malolactic fermentation in high alcohol red wine (up to 16% v/v) with a pH value above 3.4. Innoculation: Viniflora CH16 should be added to dry wine, immediately after the alcoholic fermentation. Viniflora CH16 should always be inoculated directly into the wine. No rehydration or reactivation is required. For more information about ML Bacteria, please see MoreWine!'s Guide to Malolactic Fermentation. Characteristics: Very high fermentation speed Low production of volatile acidity Outstanding tolerance to high alcohol levels. Excellent all round tolerance to pH, temperature and SO2 No production of biogenic amines Key Features: Recommended for red wines Direct inoculation, freeze-dried bacteria – does not require rehydration High numbers of active cells which ensure a quick start of fermentation This strain is pH tolerant to 3.4, Total SO2 to 40 ppm (red wines), temperature 62 – 77° F and alcohol to 16% (v/v) Low level of volatile acidity Cinnamoyl Esterase Negative

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This product replaces our TAN120 - Tannin VR Supra Enological tannins offer the winemaker the possibility to add refined, highly-bindable tannin to your wine at any stage during the process. Benefits can include increased structure and mouthfeel, color stabilization, stability, anti-oxidative qualities, and overall complexity. Tannins can reduce vegetal/herbaceous characteristics and perceived astringency. We offer four types of oenolgical tannins, two for use during fermentation, and two for use during the aging phase. How Fermentation Tannins Work Designed specifically for North American red wine fermentations, Scott'Tan FT Rouge is composed of exotic wood and chestnut tannins. These highly reactive tannins bind with anthocyanins (color compounds) in the first 3-4 days of fermentation. If sufficient natural tannins are not present in must, anthocyanins may precipitate, resulting in a loss of color. Using an enzyme like Lallzyme EX in conjunction with FT Rouge can enhance this binding of color. The continual bonding going on throughout the ferment will also improve the mid palate structure and help either significantly reduce or eliminate vegetal/herbaceous characters. Tannin additions at this early stage prove to be most efficient and are better integrated into the wine. Important!: If being used in conjunction with one another, tannins should be added 6-8 hours after the addition of the enzymes or you run the risk of having the tannins reacting with and removing the enzymes before they have had a chance to do their job!. To Use Sprinkle directly onto must and either mix well with your punch down tool or pump over to ensure thorough mixing. If adding to the wine post-fermentation we recommend allowing 3-6 weeks for full integration before racking, fining, filtering or bottling. Recommended dosage rate: 0.8-1.9 g/gal. Use at an initial rate of 1.3 gram per gallon during punch down/pump over. If you want additional tannin add at a rate of .25 g/gal. A rough approximate of weight is 1 tsp = 2.4 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. Unopened the shelf life is 5 years at 18ºC(65ºF).

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An ice pack wrapped up with your liquid yeast to help extend the time that the yeast stays cool in transit.  Cool temps help keep the viability of the yeast higher which in turns leads to faster fermentation start times and better beer.  For an even better solution consider our insulated mailer with 2 ice packs. Please note - Liquid yeast will not arrive cold even when shipped with ice packs. Ice packs and insulated mailing options are designed to keep the yeast colder for longer during shipment, but they will not ensure that your yeast arrives cold. We will not replace liquid yeast that arrives warm. During warmer months we strongly recommend you choose dry yeast.

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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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VP41 used in red and white wines will have increased richness and complexity Chosen for its good implantation, steady fermentation, high alcohol tolerance In red wines, increased spicy, cherry and red fruit flavors have been noted Lallemand Oenology specializes in the development, production, and marketing of top-grade yeast and bacteria Good for 66 gallons VP41 was isolated in the Abruzzi region of Italy during an extensive European Union collaboration for use in red and white wines. VP41 was chosen for its good implantation, steady fermentation, high alcohol tolerance (up to 15% v/v), enhanced mouthfeel and wine structure. This strain will ferment well with a pH above 3.2 and total SO2 levels up to 50-60 ppm. In red wines, increased spicy, cherry and red fruit flavors have been noted. Red and white wines fermented with VP41 have increased richness and complexity. For more information about ML Bacteria, please see MoreWine!'s Guide to Malolactic Fermentation. Alcohol tolerance: <15.5% v/v SO2 tolerance: <60 ppm pH: >3.2 Temperature: >61°F ​You can't store malolactic bacteria once the package has been opened. Note: Malolactic bacteria added during the ferment will compete with the yeast for nutrients and are antagonistic to yeast, sometimes causing problems resulting in stuck or stalled fermentations. The best time to add an ML culture is after racking off the gross lees.

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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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Enoferm Alpha will ferment at lower temperatures and at lower pH levels compared to older Viniflora strains of Oenococcus Oeni Alpha was selected as dominant strain that has the capcity to achieve reliable MLF and improve wine complexity This strain will help contribute to mouthfeel while lowering the perception of green and vegetative flavors Lallemand Oenology specializes in the development, production, and marketing of top-grade yeast and bacteria This was the first improved ML strain that we carried and still the most popular. When compared with the older Viniflora strains of Oenococcus Oeni, Enoferm Alpha (which is a different strain of Oenoccoccus Oeni) will ferment at lower temperatures and at lower pH levels. This means it is superior for both red and white wines and can be added later in the wine making process than the Viniflora strain, with the ideal time being right after the completion of primary fermentation. In addition to good performance in harsh conditions, Enoferm Alpha was preferred in blind tastings over the older Viniflora strain for its clean and fruity aromas, a decrease of vegetative and herbaceous notes and increased mouth-feel. Now we are selling multiple strains of improved ML bacteria including Beta, VP41, 31, and Baccus, giving you lots great bugs to choose from. Alpha was selected as dominant strain that has the capcity to achieve reliable MLF and improve wine complexity. Alpha will help contribute to mouthfeel while lowering the perception of green and vegetative flavors. Its low production of biogenic amines respects health concerns. For more information about ML Bacteria, please see MoreWine!'s Guide to Malolactic Fermentation. 2.5 g: good for 66 gallons 25 g: good for 660 gallons Alcohol tolerance: <15.5% v/v. SO2 tolerance: <50 ppm pH: >3.2 Temperature: >57°F You can't store malolactic bacteria once the package has been opened. Note: Malolactic bacteria added during the ferment will compete with the yeast for nutrients and are atagonistic to yeast, potentially causing higher VA levels. The best time to add an ML culture is after racking off the gross lees.

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A OptiWHITE – Lallemand Yeast Derivative for Freshness, Mouthfeel, and Oxidation Protection in White and Rosé Wines Protects delicate white and rosé wines from oxidation during fermentation Enhances freshness, aroma longevity, and color stability Improves mouthfeel and softness without adding bitterness Reduces the risk of browning and premature aging Outperforms generic inactivated yeasts due to its targeted composition and polysaccharide profile OptiWHITE is a specific yeast derivative developed by Lallemand through a proprietary production method that preserves functional compounds like glutathione precursors and polysaccharides. Added at the beginning of fermentation, OptiWHITE helps protect varietal aromas and prevents oxidative damage in white and rosé wines. This is especially valuable for wines with thiol or terpene-driven profiles, such as Sauvignon Blanc, Riesling, and Muscat. It contributes to a round, full palate with reduced astringency and bitterness, while preserving brightness and youthful aromas through aging. Compared to standard yeast hulls or inactivated yeast products, OptiWHITE delivers a cleaner fermentation environment with more reliable sensory impact. Protocol Add OptiWHITE directly to the juice or must at the beginning of alcoholic fermentation. Disperse in ten times its weight of clean water or must, then mix thoroughly into the tank. Best used before or during the first stages of fermentation. Do not co-add with bentonite or tannins. Usage Rates Recommended dosage: 20–40 grams per hectoliter = 0.2–0.4 grams per liter = 0.76–1.5 grams per gallon For home users a rough approximate of weight is 1 tsp = 3.4 grams  

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Lallzyme EX-V – Enzyme for Structured Red Wines with Enhanced Color and Tannin Stability Extracts color and tannins with improved integration for wines destined for aging Promotes stable anthocyanin-tannin bonding for long-lasting color Enhances mouthfeel, midpalate weight, and structural balance Improves juice yield and reduces solids through efficient cell wall degradation Balanced enzyme activity supports both extraction and finesse in premium red wines Lallzyme EX-V is a precision enzyme blend developed by Lallemand for red wine fermentations where structure, balance, and ageability are desired. It combines strong pectolytic activity with targeted cellulase and hemicellulase functions to break down grape skin cell walls, facilitating the release of anthocyanins and seed-derived tannins in a controlled, integrative manner. EX-V is ideal for varietals with moderate to firm skins or when crafting red wines intended for barrel aging, as it enhances phenolic complexity without over-extracting bitterness or astringency. Wines fermented with EX-V tend to show refined texture, vivid color, and excellent long-term stability. Comparison to Other Lallemand Maceration Enzymes: Compared to EX, which is best for early-drinking, fruit-forward reds, EX-V is designed for more structured, age-worthy styles with higher tannin and color stability.  EX = softer, fruit-driven reds for early release EX-V = structured, balanced reds with aging potential Protocol Dilute Lallzyme EX-V in 10 times its weight of chlorine-free water. Add to crushed grapes or must at the beginning of fermentation. Mix thoroughly for even dispersion. Optimal temperature range: 20–30°C. Avoid adding below 10°C or after alcoholic fermentation begins. Usage Rates Recommended dosage: 30–40 grams per ton of grapes = 0.66–0.88 grams per hectoliter (assuming 450 L/ton) = 0.0066–0.0088 grams per liter = 0.025–0.033 grams per gallon Use the lower end of the range for moderately structured fruit or extended maceration. Use the higher range for tighter-skinned grapes, shorter fermentations, or when greater phenolic extraction and color stability are required for barrel-aged or long-lived reds.

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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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Includes 2 ice packs and an insulated mailer to help keep your liquid yeast cold during transit.  The Insulated Mailer option is a great way to extend the length of time your ice remains cool!  These special envelopes contain self expanding foam, which creates a form-fitting container that protects and insulates liquid yeast.  This upgrade includes the Insulating Envelope and 2 Ice Packs. This option fits a number of yeast vials, pouches, or cans, and is made from thick foam insulation.  Because different yeast take up different space, each producer will fit a different quantity in this mailer.  See the chart below for what quantity of what yeast will fit inside. Yeast Producer / Brand Quantity that will fit in Insulated Mailer White Labs 6 Imperial Yeast 3 Wyeast 3 GigaYeast 3 Omega 3 To purchase, simply add however many Insulated Mailers will be needed to contain however many yeast are in your cart. Please Note!  Any additional yeast will be shipped outside of the mailer.  This option includes ice, and no additional ice needs to be purchased. Please note - Liquid yeast will not arrive cold even when shipped with ice packs. Ice packs and insulated mailing options are designed to keep the yeast colder for longer during shipment, but they will not ensure that your yeast arrives cold. We will not replace liquid yeast that arrives warm. During warmer months we strongly recommend you choose dry yeast.

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