Monsodio glutamico, commonly known as monosodium glutamate (MSG), is a flavor enhancer often used in cooking, particularly in Asian cuisine. It is the sodium salt of glutamic acid, an amino acid naturally found in many foods. MSG is known for enhancing umami flavor, which is one of the five basic tastes. While it is generally recognized as safe by food safety authorities, some individuals report sensitivity to it, experiencing symptoms like headaches or nausea after consumption.