From local delicacies to everyday favorites, here are the most dangerous foods in the world. Delicious in a pie as long as you prepare it correctly. While the root is tasty in puddings, please avoid the leaves like the plague. They contain poisonous toxins which can, if ingested in the right amount, lead to death. In short, never accept a rhubarb crumble from anyone you know doesn’t like you or it could be the last thing you ever eat.