Monosodium Glutamate Monosodium glutamate is the sodium salt of glutamic acid, a naturally occurring amino acid abundant in foods like tomatoes, cheese, and mushrooms. In the food industry, it enhances savory flavors as a flavor potentiator, reduces salt usage in low-sodium products, and balances taste in processed foods without adding bitterness. It amplifies umami in soups, snacks, and seasonings for broader appeal.