It is often stated that boric acid has the same toxicity as ordinary table salt in humans, which can be a little misleading. To understand what this means, it is important to understand a little bit about toxicology. In the medical field an objects toxicity is usually described as an LD50 value.
Mozzarella is the main type of cheese that is used on most pizzas. There are many different kinds of Mozzarella. Try to find a store that carries whole milk mozzarella. This is a nice creamy flavored mozzarella. It makes an excellent pizza.
A thinner flatbread-style pizza made on a grill. Deep Dish - A Chicago style pizza made a in a deep dish pan. The crust gets it's flavor mostly from fat, usually oil or lard, as opposed to fermentation. Stuffed - Similar to Deep dish, but a top layer of dough is placed on the pizza, hence the term stuffed. Cast Iron - Another thick style of pizza.