t yeast extract

Yeast extract is a concentrated paste or powder derived from the autolysis of baker's yeast (Saccharomyces cerevisiae), wherein the yeast cells are allowed to self-digest, releasing their cellular contents. The resulting liquid is then concentrated through evaporation and sometimes further processed to remove insoluble components. The product is rich in B vitamins, amino acids, and nucleotides, with a dark brown color and intensely savory, umami-forward flavor profile. Commercial yeast extracts vary in their degree of processing and flavor intensity; some brands include additional ingredients such as salt, vegetables, or herbs to modulate taste and application.

The flavor is characterized as deeply savory with meaty, brothy notes and minimal sweetness, making it distinctly different from nutritional yeast, which retains a lighter, more neutral taste.

Yeast extract functions as a flavor enhancer and umami booster in savory applications across numerous cuisines. It is commonly dissolved into broths, soups, stews, and gravies to deepen savory notes and add body without the need for extended simmering. In British and Australian cooking, it is spread thinly on buttered toast or used to season vegetables and casseroles. The ingredient is also employed in vegetarian and vegan cooking as a savory accent and in the formulation of commercial condiments, seasonings, and processed foods. A small quantity—typically 1/4 to 1/2 teaspoon per serving—is sufficient due to its concentrated nature.