the main component of monosodium glutamate is sodium glutamate, which is actually a non-toxic substance, but it will produce new toxic substances after cooking at high temperature for a long time, so monosodium glutamate is added when the dishes are cooked.

Under normal circumstances, monosodium glutamate is made from grain. Extracted from grain. As long as you go to a big market, you will buy good condiments.

As for monosodium glutamate extracted from harmful substances, it may be available in the black market. Just pay more attention.