When To Splurge For San Marzano Canned Tomatoes - Chowhound

But what are San Marzanos? Put simply, they're a variety of plum tomatoes often used for canning. Authentic San Marzano tomatoes come with the label DOP, or Protected Designation of Origin, and only come from the Campania area in Italy, near Mount Vesuvius. San Marzanos feature a long and pointed shape, and they have fewer seeds than other varieties. While the seeds are available for purchase and are cultivated…