Nutritional yeast consists of dried, inactive yeast sold as a yellow powder or flakes with a distinctive nutty, cheesy flavour. It is used as a seasoning in place of grated cheese, especially Parmesan, for example on pasta or in baked dishes.
It is a source of complete protein containing all the essential amino acids, as well as B vitamins. However, it does not naturally contain vitamin B12; this is present only in nutritional yeast that the manufacturer has specifically fortified with it, which is usually stated on the packaging.
