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 umami, one of the five basic tastes, which contributes to the savory flavor of dishes. MSG is widely used in various cuisines, particularly in Asian cooking, and is found in processed foods, snacks, and seasonings. While some people have reported sensitivity to MSG, scientific studies have generally deemed it safe for consumption in normal amounts.