Inactive Yeast
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What it is
Inactive yeast is a deactivated form of the yeast Saccharomyces cerevisiae, a single-celled fungus. It is grown in a nutrient-rich medium and then deactivated by heat or other methods, which stops its fermentation activity. The resulting cells are dried and often milled into a powder.
Why it's used
Inactive yeast is used as a flavor enhancer, providing a savory, cheesy, or umami taste. It is also used as a source of B vitamins. You can find it in savory baked goods, sauces, snacks, and vegan cheese alternatives.
Health notes
Inactive yeast is generally recognized as safe (GRAS) by the FDA for use in food. It is a good source of protein and B vitamins. Regulatory bodies like JECFA and EFSA have evaluated yeast and its components. At typical consumption levels, it is not associated with adverse health effects.
Allergen info
Inactive yeast is not derived from any of the nine FDA major allergens. It does not contain gluten.