Donuts, United States
These all-American fried wheels of dough need no introduction, but we will say one thing: the delicious guilt of snacking on these addictive calorie bombs makes them taste even better. If that's possible.
Corn on the cob, global
God probably created corn just to have an excuse to invent melted butter. There's something about biting down on a cob of corn -- it's a delicate enough operation to require concentration but primal enough to make you feel like the caveman you always wanted to be. Great food is caveman food.