Authentic Neapolitan pizzas (pizza napoletana) are typically made with tomatoes and mozzarella cheese. They can be made with ingredients like San Marzano tomatoes, which grow on the volcanic plains to the south of Mount Vesuvius, and mozzarella di bufala Campana, made with the milk from water buffalo raised in the marshlands of Campania and Lazio in a semi-wild state (this mozzarella is protected with its own European protected designation of origin).