Nutritional yeast
From W8MD weight loss and sleep centers
A food product or food additive made from yeast (a fungus). The yeast is pasteurized (heated) to prevent it from growing in a person's digestive tract. Nutritional yeast is used as a source of protein and b vitamins. Some (but not all) brands of nutritional yeast contain vitamin b12. Latin name: saccharomyces cerevisiae.
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