As a Sicilian, this makes my mouth water...
But, I think it requires a POD a lot further back than some people who may read this are thinking. Sicily was very underdeveloped in comparison with the rest of Italy and stayed that way even after the Italian Unification of 1861, which would be why so much of "Italian" Americans and Australians are actually Sicilians or Neopolitans, and how the Cosa Nostra spread into these regions as well, as it was largely confined to Sicily until the early 20th century.