If a pizza and an empanada had a baby, it would probably look something like a calzone. Shaped like a dumpling with a pizza flavor, the calzone is a perfect mix of the two revered foods. It's not hard to figure out why some may think the calzone is an American invention. After all, it's in the same realm as the stromboli, created in Philadelphia in the 1950s, and the size of your corner pizzeria calzone is like everything else in America: supersized. But, just like the pizza, calzones are inherently Italian. In fact, they share the same birthplace as...