Pizza seems like a fairly simple food. A crust of dough is covered by a tomato based sauce, cheese, and toppings before being baked in a hot oven. If you stop to think about it, however, there are many interesting ways that the simple food is prepared, and many of them are regional variations. I’m not talking about the latest change made by Pizza Hut to put cheese in the crust, add another layer of pepperoni, or fill sausages with pizza sauce. SeriousEats.com has a story detailing the different styles of pizza around the country, and it’s pretty interesting to read a little about the history about the origin of these different kinds of pie.