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Originally we were going to go with the double-folded pizza slice as used by John Travolta in Saturday Night Fever since one could conceivably hold it in one hand while operating a virtual or full-size keyboard.
However the calzone is actually much more suited for single-handed use and is less likely to drip. Filled with mozzarella and ricotta cheese as well as meats such as pepperoni and ham, and available in both baked and deep fried variants, the Calzone is the clear winner in
Roman tweeting foods.