North Mountain Supply Fermaid O yeast nutrient in an 8 oz jar, formulated as an organic nitrogen source to nourish yeast, improve fermentation kinetics and enhance aroma. Ideal for beer and wine homebrewing, it helps lower peak fermentation temperatures and reduces sulfur off odors such as H2S.
North Mountain Supply Fermaid O is a specialized yeast nutrient designed for serious homebrewers and winemakers who want greater control over fermentation. Supplied in a convenient 8 oz jar, it provides an organic nitrogen source that supports healthy yeast growth and activity throughout the ferment.
By supplying balanced nutrients, Fermaid O helps yeast perform more efficiently, which can lead to cleaner fermentations, improved aromas and a more predictable timeline from start to finish. It is particularly useful in musts and worts that are naturally low in yeast assimilable nitrogen, or in higher gravity recipes that place extra demands on the yeast.
One of the key benefits of Fermaid O is its effect on fermentation behavior. It can help reliably lower peak fermentation temperatures and improve fermentation kinetics, especially toward the end of the ferment. As a result, brewers and winemakers often see fewer sulfur based off odors, including hydrogen sulfide (H2S), which can otherwise be difficult to remove later in the process.
Fermaid O is suitable for a wide range of beer and wine styles, from delicate whites and fruit wines to robust reds and high gravity ales. Used correctly, it supports yeast health without overwhelming the natural character of the base ingredients.
For best results, suspend Fermaid O in water or juice or must and mix well before adding it to your ferment. This is especially important if you are adding nutrient during active fermentation, as it helps avoid localized CO2 release and potential overflowing of the vessel. Always follow dosage guidelines appropriate to your batch size and style.
Key features:
Fermaid O yeast nutrient from North Mountain Supply
8 oz jar for multiple beer and wine batches
Organic nitrogen source to nourish yeast and support healthy fermentation
Helps improve fermentation kinetics, especially toward the end of fermentation
Can lower peak fermentation temperatures and reduce sulfur off odors such as H2S
Suitable for a wide range of beer and wine homebrewing applications
Suggested uses:
Boosting yeast nutrition in grape musts and fruit wines
Supporting clean, steady fermentations in higher gravity beers and wines
Reducing the risk of sluggish or stuck fermentation due to nutrient deficiencies
Improving aroma and flavor outcomes in both beer and wine
Usage tip:
Suspend the nutrient in water or juice or must and mix thoroughly before adding, particularly when dosing active fermentations, to minimize foaming and avoid overflow.
