Originally Posted by Merlot
This is true Greg and the umami taste is associated with msg.
Again, I'm no expert in this field. I read stuff, I partly understand it, then later I forget more of it... And then maybe sometimes can't explain it well or I explain it wrong... (Plenty of disclaimers here.)
AFAIK the umami taste is associated with tasting glutamates, for example found in Asian fish sauce. MSG (monosodium glutamate) is just one of many glutamates, and is often associated in some people with headache symptoms. And of course it contains sodium which some people want to or need to limit intake. From what I understand MSG is a heavy dose of glutamates, but that other foods without MSG can have glutamates too.
From what I read it is not clear but possibly some people are able to taste umami while others are not. I understand this whole concept has some controversy associated with it.