of msg

Monosodium glutamate (MSG) is the sodium salt of glutamic acid, a naturally occurring non-essential amino acid. First isolated in 1908 by Japanese chemist Kikunae Ikeda from kombu seaweed broth, MSG is produced through bacterial fermentation of molasses or other carbohydrate sources, or through chemical synthesis. The resulting white crystalline powder is odorless with a distinctive savory taste known as umami—the fifth basic taste sensation that enhances the perception of savory flavors.

MSG exists naturally in many foods including aged cheeses, tomatoes, mushrooms, and fermented products. The manufactured form is chemically identical to its natural counterpart and has been approved as a food additive in most countries. It is highly soluble in water and enhances flavor perception at concentrations as low as 0.1 to 0.3 percent by weight in food products.

MSG is used globally as a flavor enhancer that amplifies savory, meaty, and broth-like qualities in foods without imparting its own distinct flavor. It is foundational to East Asian cuisines, particularly Chinese, Japanese, Korean, and Vietnamese cooking, where it is added to soups, broths, stir-fries, and sauces. Western food manufacturers incorporate MSG into processed foods including canned soups, gravies, snack foods, and seasoning blends. In home cooking, MSG is typically dissolved in a small amount of water before addition to ensure even distribution, and is often used in combination with salt and other seasonings to create well-rounded flavor profiles.