It is sold in the form of yellow flakes, granules, or powder, and may be found in the bulk aisle of natural food stores.
When the yeast is ready, it is killed with heat and then harvested, washed, dried and packaged.
[10] In a reference amount of 15 g (0.53 oz), one manufactured, fortified brand is 33% carbohydrates, 53% protein, and 3% fat, providing 60 calories (table).
Nutritional yeast contains low amounts of dietary minerals (source in table), unless fortified.
[12] When it is fortified, the vitamin B12 (commonly cyanocobalamin) is produced separately and then added to the yeast.