San Marzano tomato 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. On November 22, 2010, the Italian carabinieri confiscated 1,470 tons of canned tomatoes worth €1.2 million of improperly labeled product. San Marzano tomatoes, along with Roma tomatoes, have been designated as the only tomatoes that can be used for Vera Pizza Napoletana (True Neapolitan Pizza). San Marzano tomatoes originate from the small town of San Marzano sul Sarno, near Naples, Italy, and were first grown in volcanic soil
San Marzano sul Sarno held it until the Angevine conquest of the Kingdom of Naples. Later families who held the title of San Marzano include the Del Tufo, the Mastrili, and the Albertini. The town suffered damage during World War II. <br> San Marzano sul Sarno San Marzano sul Sarno is a town and "comune" in the province of Salerno in the Campania region of southern Italy, situated about halfway between "Autostrade" A3 and A30. Sarno is located in the Sarno River valley, in which traces of human presence have been found that date back to as early as the 9th-6th centuries BC. San