What I want to know is who discovered wasabi. I mean, think about this for a second. It's a long time ago, hundreds or thousands of years I guess. You're some farmer/peasant type, strolling around, when your stomach starts to rumble. Looking around, you see nothing but these: wasabi plants . So naturally, being hungry and not knowing any better, you pick the plant out and proceed to eat the roots. Why the roots? Jesus, I've got no idea. I don't walk around the woods eating roots from random plants, myself. So anyways, you eat the roots, next thing you know you're screaming in pain and clawing at your burning face, and when it's all over, you think to yourself: "Sweet. I so need to cultivate this so I can eat it all the time. Wait'll I show my friends!"
Whoever you were, glorious wasabi-discoverer, I salute you.