Disodium Guanylate, also known as E627, is a food additive that is a flavor enhancer. It is a salt derived from guanosine monophosphate (GMP) that is used to boost the savory or umami taste in various processed foods. While it occurs naturally in certain foods like shitake mushrooms, commercial production is often achieved through a fermentation process using microorganisms such as the bacterium Corynebacterium ammoniagenes. These microorganisms convert precursor molecules into disodium guanylate, which is then isolated, purified, and transformed into a powdered form suitable for incorporation into a wide range of food products. It is commonly mixed with MSG or disodium inosinate to enhance flavor in various snacks, soups, sauces, and other processed foods.