Neapolitan pizza and pizza Margherita DOP made with tomato, buffalo mozzarella from Campania, basil and extra virgin olive oil. The pizza napoletana is a Traditional Speciality Guaranteed (TSG) product in Europe. The TSG certification attests that a particular food product objectively possesses specific characteristics which differentiate it from all others in its category, and that its raw materials, composition or method of production have been consistent for a minimum of 30 years. Neapolitan pizza Neapolitan pizza (Italian: "pizza napoletana") is a style of pizza made with tomatoes and mozzarella cheese. It must be made with either San Marzano tomatoes or Roma tomatoes,
San Marzano Oliveto prospered there in ancient times. This hypothesis is supported by the existence of an ancient olive press in nearby Santo Stefano Belbo, and by the fact that olives continue to thrive there, although not in any great quantity, to the present day. The first human settlers to the area came from Liguria, but the first extant buildings and documentary evidence of settlement date from Roman times. Tradition has it that the four towers, now collapsed, of the present castle were built by the Romans. The history of San Marzano, like that of Moasca, Calamandrana, Rocchetta Tanaro and Calosso, is linked