 Canned San Marzanos, when grown in the Valle del Sarno (valley of the Sarno) in Italy in compliance with Italian law, can be classified as "Pomodoro San Marzano dell'Agro Sarnese-Nocerino" and have the EU "DOP" emblem on the label.Most San Marzano tomatoes sold commercially are grown in Italy, though they are produced commercially in smaller quantities in other countries.Because of San Marzano's premium pricing, there is an ongoing battle against fraudulent product.