Yeast extract is a food ingredient derived from the cells of yeast, typically Saccharomyces cerevisiae. It is commonly used as a flavoring agent in processed meat and seafood products. Yeast extract undergoes a process of autolysis, where the yeast cells are broken down, releasing various compounds such as proteins, amino acids, and nucleotides. These components contribute to a rich, savory taste known as umami. In processed meat and seafood, yeast extract enhances the overall flavor profile, providing a meaty and savory note. It is often used as a natural alternative to monosodium glutamate (MSG) as a flavor enhancer. Yeast extract can help improve the taste and palatability of processed products, adding depth and complexity to the flavor experience.