Vegetables.

More evidence that vegetables are evil can be found in the Book of Daniel:

"Daniel then said to the guard whom the chief official had appointed over Daniel, Hananiah, Mishael and Azariah, 'Please test your servants for ten days: Give us nothing but vegetables to eat and water to drink. Then compare our appearance with that of the young men who eat the royal food, and treat your servants in accordance with what you see.' So he agreed to this and tested them for ten days.
At the end of the ten days they looked healthier and better nourished than any of the young men who ate the royal food."
— Daniel 1:11-15 (NIV translation)

On the surface, this passage might look like an endorsement of vegetarianism. But take a closer look. Daniel, Hananiah, Mishael and Azariah were God's chosen representatives during the Babylonian exile. The point of this passage was to show that God would sustain their health because of their servitude to Him, even if their diet would not normally sustain them. They didn't become healthy because of the vegetables they ate, they became healty in spite of their vegetarian diet!

"Okay," I hear the Christians cry, "But those books were in the Old Testament. The ancient dietary laws were done away with when Jesus came along. Surely, vegetables are no longer evil in the New Testament!" Oh no? Take a look at Paul's letter to the Romans:

"One man's faith allows him to eat everything, but another man, whose faith is weak, eats only vegetables."
— Romans 14:2 (NIV translation)

Not only are vegetables still looked down upon in the New Testament, they are a sign of weak faith! If that isn't Biblical proof that vegetables are evil, I don't know what is.