When you step through the doors of a fast-food chain, you know exactly what you're going to get. But while many popular U.S. chains — including McDonald's, Burger King, Taco Bell, Domino's, Starbucks, and Dunkin' Donuts — have planted roots around the world, their menus don't always match those of their homegrown counterparts. Check out these offerings that you can only get outside the U.S.Everyone indulges in fast food sometimes, including the best chefs. Find out which fast-food restaurants top chefs aren't ashamed to love