Monosodium glutamate, often abbreviated as MSG, is a flavor enhancer commonly used in cooking. It is the sodium salt of glutamic acid, an amino acid that occurs naturally in many foods, such as tomatoes and cheese. MSG is known for its ability to enhance the umami taste, which is one of the five basic tastes alongside sweet, sour, bitter, and salty. Many people enjoy MSG in various cuisines, especially in Asian dishes like Chinese food. While some individuals may have sensitivities to MSG, extensive research has shown that it is generally safe for most people when consumed in moderation.