Nutritional Yeast (Best Option)
1 tablespoon per 1 cup of soupNutritional yeast is deactivated yeast rich in glutamates, which provide a savory, umami flavor similar to that contributed by yeast in recipes. It enhances the depth of flavor in soups without fermentation or rising effects.
To use it effectively, sprinkle it in during the final stages of cooking to preserve its flavor. Avoid excessive heat or prolonged cooking after adding to prevent bitterness.
Compared to live yeast, nutritional yeast does not affect texture or cause fermentation but successfully mimics the flavor contribution, making it ideal for soups where yeast is used for taste rather than leavening.