Brewer's Yeast vs. Nutritional Yeast — What's the Difference?

Brewer's yeast, as the name suggests, is directly related to the beer-making process. It's a fungus that ferments and turns sugar into alcohol. This yeast has a somewhat bitter taste due to its association with beer production. Conversely, nutritional yeast is grown specifically for its nutritional value and is treated to become inactive. Its flavor is often described as nutty or cheesy, making it popular among vegetarians and vegans.

While both types of yeast are rich in nutrients, they serve different primary purposes. Brewer's yeast is largely used in the brewing of beer and can also be found in certain baked goods. In contrast, nutritional yeast isn't used for fermenting but is sprinkled on dishes or mixed into food to enhance flavor and nutritional content.

In terms of nutritional benefits, both yeasts are quite similar. They're excellent sources of B vitamins, protein, and trace minerals. However, the key difference lies in the taste. Due to the bitter undertones of brewer's yeast, it might not be palatable for everyone. Nutritional yeast, with its cheesy flavor, is often used as a cheese substitute in many vegan dishes.

A significant distinction to note is the active versus inactive nature of these yeasts. Brewer's yeast is active, meaning it's alive and can ferment sugars. Nutritional yeast, on the other hand, is inactive, ensuring it doesn't have fermenting properties and is primarily used as a flavoring agent or dietary supplement.

Lastly, it's crucial to understand that while both these yeasts offer numerous health benefits, they cannot be used interchangeably in recipes due to their differing tastes and functionalities. Brewer's yeast has specific roles in brewing and baking, while nutritional yeast serves as a seasoning and nutrient boost.