Fermaid O Yeast Nutrient

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Fermaid O is an organic yeast nutrient designed to support healthy fermentation in wine, mead, cider, and kombucha by providing naturally derived nitrogen and essential micronutrients. This 2 oz package from CAPYBARA Distributors Inc. is a popular choice among home fermenters who want to reduce off-flavors and stuck fermentations. Overall, it is a well-regarded, professional-grade nutrient that delivers reliable results in small-batch home brewing.
Key Features & Specs
| Net Weight | 2 oz (56.7 g), suitable for multiple small batches |
|---|---|
| Nutrient Type | Organic yeast hulls providing naturally occurring nitrogen (YANC) without inorganic diammonium phosphate |
| Compatibility | Designed for wine, mead, cider, and kombucha fermentation |
| Usage Rate | Typically used at around 1.25 g per gallon, often added in staged doses during active fermentation |
| Key Benefit | Reduces hydrogen sulfide production and helps prevent stuck or sluggish fermentation |
| Sold By | CAPYBARA Distributors Inc., a specialty home brewing supplier |
| Storage | Should be stored in a cool, dry place in a sealed container to maintain potency |
Best for: Fermaid O is ideal for home mead and cider makers who want a cleaner, more complete fermentation with fewer off-flavors and a reduced risk of stuck fermentation, especially those following staggered nutrient addition protocols like TOSNA.