A calzone (/kælˈzoʊni/, US /kælˈzoʊneɪ/ or /kælˈzoʊn/, UK /kælˈtsoʊni/; Italian: [kalˈtsoːne], "stocking" or "trouser") is an Italian oven-baked filled pizza, shaped like a folded pizza. The calzone originated in Naples. A typical calzone is made from salted bread dough, baked in an oven and stuffed with salami or ham, mozzarella, ricotta and Parmesan or pecorino cheese, as well as an egg. Different regional variations on a calzone can often include other ingredients that are normally associated with pizza toppings. Smaller calzones can also be fried in olive oil instead of being baked in an oven.
Sandwich-sized calzones are often sold at Italian lunch counters or by street vendors, because they are easy to eat while standing up or walking. Fried versions of the calzone are typically filled with tomato and mozzarella: these are made in Apulia and called panzerotti.
The Sicilian cuddiruni, or cudduruni pizza is distantly related to the calzone. This is a dish stuffed with onions (or sometimes other vegetables, such as potatoes or broccoli), anchovies, olives, cheese and mortadella; the rolled pizza dough is folded in two over the stuffing and the edges are sealed before the dish is fried.