nutritional yeast

Nutritional yeast is an inactivated strain of Saccharomyces cerevisiae that has been dried and deactivated through heat treatment. Originating from breweries and fermentation industries, it is now cultivated specifically for nutritional purposes. The ingredient appears as yellow, flaky granules with a nutty, umami-forward flavor reminiscent of cheese or mushrooms. Most commercial nutritional yeast is fortified with B vitamins, particularly B12, which makes it especially valuable in plant-based diets where this nutrient is otherwise scarce.

The production involves culturing yeast on a carbohydrate substrate, then harvesting, washing, and drying the yeast cells to inactivate them. The cell walls remain intact, contributing to the ingredient's chewy texture and nutritional profile. Different strains and processing methods may produce varying flavor intensities and nutritional compositions.

Nutritional yeast functions as a savory seasoning and cheese substitute in both omnivorous and plant-based cooking. It is commonly sprinkled over popcorn, pasta, vegetables, and soups to impart a cheese-like, umami depth. In vegan cuisine, it serves as a key component in cashew-based cheese sauces, vegan hollandaise, and creamy pasta dishes. It can also be incorporated into smoothies, scrambled tofu, salad dressings, and grain bowls for nutritional fortification. While primarily used as a finishing seasoning rather than a cooking ingredient, small amounts can be added to baking preparations or mixed into breadings and plant-based burger patties.