More like "how do they know?"

I was bored this morning, so I went to Wikipedia and saw this in the "Did you know" section:

"The red-purple coloured inedible mushroom Russula sardonia has a hot peppery taste"

Well, if the Russula sardonia mushroom is inedible, then how do you know what it tastes like? More importantly, who's the idiot that goes around eating inedible mushrooms so they can catalogue that data in Wikipedia?