[ubercore]

Have you reproduced it with MSG dissolved in water?

EDIT: Have you thought about lactose? It's in whey (depending on quality, various concentrations)

[kazinator]

Haven't tried yet. I do know I tolerate salt.

Response to EDIT: I tolerate milk products well, including cheese. I have used whey powder for supplementation (not in recent years). We're talking big quantities consumed at once. I noticed it's used in some baked goods and I tried it that way; it adds a certain milky "body" to the flavor.