@dber couldn't expect less from our resident mycologist! ;-)
It is kind of hard to describe the taste, but I reckon is one of those things like shrimp that have a mild taste and kinda take up the flavor of the things you cook them with. They are not expensive, and at least here in Xalapa (and Mexico City) you can find them easily in the markets.
I think I might be able to find these canned or pickled in my neighborhood in NY, but something tells me it would be a bad introduction.