Brewer's yeast is a one sell fungus known as Saccharomyces cerevisiae. Use Brewer's Yeast Powder in baked goods, or on top of cereals or salads. Also it can be used by blending it into smoothies. Many women also use brewer's yeast to support lactation. This brewers yeast is derived from molasses and is unflavored, and unsweetened causing it to be naturally bitter. Nutricost's brewer's yeast is non-gmo, gluten free, and food grade.