I assume we're talking common foods, and not snails, crickets or Korean stir-fried kitty?
Since I'm allergic to onions and soy, we'll have to put those in the CARE package. Eggplant, asparagus, organ meats, peppers. There are things I prefer not to eat, but in a formal setting where it would be rude to pull it out, I will eat them (broccoli or lima beans).