That’s not quite accurate. It’s not a particular mushroom which they forgot to ban. They are sclerotia, and there are lots of varieties. I don’t know where the

That’s not quite accurate. It’s not a particular mushroom which they forgot to ban. They are sclerotia, and there are lots of varieties. I don’t know where the name truffle came about. https://en.m.wikipedia.org/wiki/Sclerotium https://en.m.wikipedia.org/wiki/Sclerotium