Nutritional Yeast is an inactive form of yeast, the same strain of yeast bakers use to leaven bread, except it's been pasteurised in order to extract its nutritional benefits.
Use nutritional yeast the same way you would grated cheese. Sprinkle it over everything from salads & roasted veggies to pasta and rice for a savoury flavour boost. Toss a couple of tablespoonfuls with a little bit olive oil, salt, and freshly popped popcorn for a "cheesy" snack.
Nutritional yeast is commonly used in vegan versions of recipes that are traditionally made with cheese, like Mac & Cheese, Pesto, Enchiladas, risotto etc.
A tablespoon of nutritional yeast has just 20 calories, yet contains a surprisingly large amount of protein and even though the yeast has a naturally savoury flavour, it has no sodium.
How to Store
Store nutritional yeast in a cool, dark place or in the refrigerator and it should keep for about 18 months.