monosodium glutamate msg in a wooden spoon on a dark background. food supplement e621. taste seasoning to enhance the food

acid additive amino asia asian background chemical china chinese condiment cooking cuisine danger dark delicious e621 eat enhance enhancer fast flavor food free glutamate glutamic gourmet ingredient mixture molecular mono monohydrate monosodium msg nutrient nutrition odor powdered salt seasoning spoon stop taste texture thai toxic warning white