If I could have only one meal before I died, it would be pizza. I love the yeasty perfume of pizza baking, the spicy gravy smothered on top; the veggies, the crunch of the outer crust, the breadiness; the flavors. Nature's perfect food, in my view, began in Naples, so it's off we go to see how pizza became the food we love so much. Recipes: Calzone; Neapolitan Pizza; Florentine Apple Cake.