North Mountain Supply Fermaid O is a specialized yeast nutrient designed for homebrewers and winemakers who want healthier fermentations and more predictable results. Supplied in a 3.5 oz plastic jar, it provides an organic nitrogen source that supports robust yeast growth and activity throughout the ferment.
By supplying balanced nutrients, Fermaid O helps yeast ferment more efficiently, which can lead to cleaner flavor profiles, improved aroma and fewer off characters. It is particularly helpful in musts and worts that are naturally low in yeast assimilable nitrogen or in higher gravity recipes where yeast are under more stress.
One of the strengths of Fermaid O is its impact on fermentation behavior. Used correctly, it can:
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Help lower peak fermentation temperatures
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Improve fermentation kinetics, especially toward the end of fermentation
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Reduce sulfur off odors, including hydrogen sulfide (H2S)
This makes it a strong choice for beer and wine styles where you want clean, focused flavors without unwanted sulfur notes.
Fermaid O is suitable for a wide range of beer and wine homebrewing applications, from delicate white wines and fruit wines to robust reds and higher gravity ales. It fits well into staggered nutrient addition schedules or other nutrient management strategies designed to keep yeast healthy from pitch to terminal gravity.
For best results, suspend Fermaid O in water or juice or must and mix thoroughly before adding it to your ferment. This is especially important when dosing during active fermentation, as it helps minimize localized CO2 release and reduces the risk of foaming or overflow in your fermenter. Always follow dosage guidelines appropriate to your batch size and style, and adjust based on your recipe and process.
Key features:
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Fermaid O yeast nutrient from North Mountain Supply
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3.5 oz plastic jar for multiple batches of beer or wine
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Organic nitrogen source that nourishes yeast and improves fermentation control
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Helps lower peak fermentation temperatures and improve fermentation kinetics
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Reduces sulfur off odors such as H2S when used properly
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Suitable for a wide range of beer and wine styles in homebrewing
Suggested uses:
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Supporting primary fermentation in grape wines, fruit wines and ciders
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Boosting yeast health in higher gravity beers and wines
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Reducing the risk of sluggish or stuck fermentations due to nutrient deficiencies
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Improving aroma and flavor outcomes in both beer and wine through better yeast management
Usage tip:
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Suspend Fermaid O in a small amount of water or juice or must and mix well before adding, especially during active fermentation, to avoid sudden CO2 release and potential overflow.