Since moving here, to the St. Louis area, I have probably had pizza for about 50% of the meals I have eaten. Not all of these times have been pizza in the St. Louis style, but many have. St. Louis style is super thin yeast free crust and the use of Provel cheese, then cut into squares instead of slices. Provel is a fusion of provolone, Swiss, and white Cheddar cheeses that was developed by a St. Louis firm called Costa Grocery in the 1950s. In my humble opinion, it is the best cheese anyone could put on a pizza. It is a little more stringy than mozzarella that is typically used on pizza. It is not widely available outside the St. Louis area. The thin crust is cracker like in consistency which reminds me of a lavash. I have enjoyed St. Louis pizza several sources. The frozen pizza option comes from Dogtown Pizza and tastes really great for a frozen pizza. For delivery, I have been enjoying Imo's Pizza . Several sit down restaurants I have visited have offered St. Louis style pizza.