Pizza estimated that annual production of pizza cheese was in the U.S. and in Europe. Authentic Neapolitan pizza ("pizza napoletana") is made with San Marzano tomatoes, grown on the volcanic plains south of Mount Vesuvius, and mozzarella di bufala Campana, made with milk from water buffalo raised in the marshlands of Campania and Lazio. This mozzarella is protected with its own European protected designation of origin. Other traditional pizzas include "pizza alla marinara", which is topped with marinara sauce and is supposedly the most ancient tomato-topped pizza, pizza capricciosa, which is prepared with mozzarella cheese, baked ham, mushroom, artichoke and tomato,
San Marzano Oliveto motto "Virtus addidit". It incorporates the coat of arms of the Asinari family, lords of San Marzano between the thirteenth and seventeenth centuries. Cited by Alfieri as "San Marzano of Acquosana", the first documents that mention the castle date from the birth of the Contado of Acquosana - the ancient territory of Acqui Terme. The castle, probably of Roman origin, has a square tower that was added by the Asinari family. The tower has four square crenellations, one in each corner: the embrasures of one of them can still be seen today. After the Spanish occupation of 1655, the castle