This fortified food is an excellent source of Vitamin B12 -- an essential nutrient which needs to be supplemented for anyone following a plant-based diet. It's also a great option to have in the pantry for those looking for a cholesterol- and saturated fat-free alternative to grated cheese. Have you heard of people using nutritional yeast, but aren’t sure what it is or how to use it? Nutritional yeast, Saccharomyces cerevisiae, is a powdered yeast that is packed with vitamins