Nutritional yeast is a strange condiment, beloved by vegans and people with alpha-gal syndrome. It consists of dead flakes of saccharomyces cerevisiae (the same glorious fungus which gives us bread and gets us drunk). Nutritional yeast is marketed as a cheese substitute. I think this is a mistake. Nutritional yeast is very much its own thing, and you'll enjoy it more if you don't think of it as a substitute for cheese. It tastes faintly of a mild cheddar, and it tastes sort of like Parmesan in the way that many savory things taste sort of like Parmesan. But, to...