St. Louis-style Pizza. With its cracker-thin baking powder crust and square slices, there are those who'd claim this dish isn't in fact a pizza. But to residents of St. Louis, it's one of their city's culinary icons. And before you dismiss it out of hand — try it. Any pizza that can go from "Hmmm, I need a snack" to hot on your plate in 20 minutes is worth trying at least once!