Ever wonder why the burger in the ad looks nothing like the one in your hand? Turns out, those picture-perfect burgers aren't even cooked. They're basically food models built piece by piece by food stylists. We're talking raw patties with painted-on grill marks, sesame seeds placed with tweezers, and even cardboard shoved in between layers to make them look extra thick and juicy. Oh, and that melty cheese? Sometimes it's glue. The steam? Probably sprayed on. And don't be shocked some of those "p