> And potatoes have me confused.  Is it because only small amounts
> can be eaten raw or because we haven't had enough time to adapt to them?

Actually it is because wild potatoes are poisonous.  I'm sure you've
heard that the green skin of domestic potatoes contains a toxin?
Well, before potatoes were domesticated, that toxin was found
throughout the potato, both in the skin and in the flesh.

Lisa in Alaska