Umami is a Japanese term describing a "fifth taste". The four traditional tastes are sour, sweet, salty and bitter. Umami is found in MSG as well as in seaweed, aged wines and aged cheeses. The taste of umami is often described as "salty," "savory," "meaty" or "brothy."MSNBC: Recipes For The ‘Fifth’ Taste: Umami (January 10, 2008)
Umami Taste Receptors
Although umami was discovered more than 100 years ago, scientists only recently unlocked where and how how taste bud receptors perceive the flavor. In 2006, researchers at the Mount Sinai School of Medicine in New York proposed that more than one taste bud receptor was responsible for the umami flavor.Journal of Neuroscience:Umami Responses in Mouse Taste Cells Indicate More than One Receptor(February 22, 2006)