What is soy and is it the same as monosodium glutamate?

Soy is a kind of bean from which we get liquids, oils, meal, paste, etc. MSG - Monosodium Glutamate - is a flavour enhancer usually industrially fermented by bacteria. The constituents of MSG, Glutamate, are found in nearly all foods as a protein amino acid.

Free Glutamate, that provides the same flavour enhancement as MSG, is found in high concentrations in fermented bean products, like Soy sauce, and other foods such as yeast, sharp cheeses, fish sauce etc...