Considering today's MSG In A Bottle, some people asked me about other ingredients — other than hydrolized protein — that may (or do) contain monosodium glutamate (or at least commercially produced glutamic acid). Here's a short list — but beware that this is from a strict anti-MSG website.
For more info on umami, here's a site that is devoted to the sensation, with recipes to boot.
And for anyone who wants a direct line to the Lords Of Chinatown, the original Chinatown Bad Boys, just check out The Notorious MSG!
