Imagine sitting in a pizzeria in Napoli or Rome. You order a pizza Margherita. What do you order to drink? Is it a certain kind of wine? Soda? Gin and tonic? Beer? What are the Italians around you ordering to drink? When you think of Italy, you might think of vineyards and wine glasses, but venture into a bustling local pizzeria, and you'll probably find something that you don't expect.