Fermaid O is popular with distillers and winemakers who are seeking to use an organic yeast nutrient. Fermaid O is a blend of inactivated yeast fractions rich in organic nitrogen. Fermaid O does not contain added ammonia salts (DAP) or micronutrients. The importance of organic nitrogen from yeasts is well known as a highly efficient nutrient source for wine yeasts, especially when compared to inorganic nitrogen from DAP. In addition, Fermaid O consistently produces lower levels of negative sulfur compounds, compared with DAP. With its high content of organic nitrogen, Fermaid O can help winemakers achieve steady fermentations, while limiting temperature peaks. Available in 2.5kg bags.