Quotes from this video

Now let’s go a little bit into the history of excitotoxicity and how this all came about. In Japan they used a flavoring substance for their food called kombu or sea tangle. And this is a seaweed when you dry it you can grind it up. put it in your food and it greatly enhances the taste of the food and that’s been used for a thousand years. No one really knew why it enhanced the taste of food, until 1908 when a research chemist by the name of Ikeda, examined kombu and he discovered that the taste enhancing compound was glutamate. You may have heard of monosodium glutamate, or MSG, well that’s the active compound glutamate.
…because it enhances the taste by stimulating certain cells in the brain and the tongue.

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