What is nutritional yeast

Last updated: April 1, 2026

Quick Answer: Nutritional yeast is an inactive form of Saccharomyces cerevisiae yeast that has been deactivated, dried into flakes, and fortified with vitamins. It has a savory, cheese-like flavor and is commonly used as a vegan substitute for cheese.

Key Facts

What is Nutritional Yeast?

Nutritional yeast is an ingredient derived from Saccharomyces cerevisiae, the same species of yeast used in brewing and baking. However, the yeast is deactivated through a heating process and then dried into small flakes or powder. Unlike active yeast used in baking or brewing, nutritional yeast cannot ferment and is nutritionally inert in terms of leavening properties. It's primarily valued for its nutritional content and distinctive flavor rather than any biological activity.

Nutritional Content and Benefits

Nutritional yeast is particularly valued for its vitamin content, especially B vitamins. It naturally contains thiamine, riboflavin, niacin, and pantothenic acid. Many commercial products are fortified with additional B12, making it especially popular among vegans and vegetarians who often struggle to obtain adequate B12 from plant-based foods. Beyond B vitamins, nutritional yeast contains protein, dietary fiber, and various minerals including chromium and selenium. A two-tablespoon serving typically provides substantial portions of daily B-vitamin requirements.

Flavor Profile and Culinary Uses

The defining characteristic of nutritional yeast is its savory, umami-rich flavor often described as cheese-like, nutty, or reminiscent of parmesan cheese. This distinctive taste makes it invaluable in vegan cuisine as a dairy-free cheese substitute. It can be sprinkled on popcorn, pasta, roasted vegetables, or used in sauces, soups, and dressings. Some people incorporate it into smoothies or use it as a condiment. The flavor is strong, so a little goes a long way in most applications.

Vegan and Dietary Applications

Nutritional yeast has become a staple in vegan and vegetarian cooking, providing umami flavors previously obtained from cheese or other animal products. It helps create more satisfying, flavorful dishes without animal ingredients. Beyond veganism, people following various dietary approaches use it as a nutritional supplement. Some athletes and fitness enthusiasts value its protein content and amino acid profile. It's generally affordable and has a long shelf life when stored in a cool, dry place.

Related Questions

Is nutritional yeast the same as brewer's yeast?

While both are derived from yeast, they are different products. Brewer's yeast is the byproduct of beer brewing and has a bitter taste, while nutritional yeast is specially processed to have a savory, cheese-like flavor and better taste profile for culinary use.

What are the health benefits of nutritional yeast?

Nutritional yeast provides B vitamins including B12 in fortified versions, protein, fiber, and minerals like chromium. It supports energy metabolism, nervous system function, and can help vegans meet B12 requirements, though it should not be the sole source.

How do you use nutritional yeast in cooking?

Nutritional yeast can be sprinkled on popcorn, pasta, and roasted vegetables, mixed into sauces and dressings, added to soups, or incorporated into vegan cheese alternatives and baked goods. Start with small amounts as it has a strong flavor.

Sources

  1. Wikipedia - Nutritional Yeast CC-BY-SA-4.0
  2. USDA - Food Nutrition Database Public Domain