San Marzanos are a particular variety of canned tomato usually grown in the Campania region of Italy, says MakingSense. “The Italian government has granted tomatoes packed in that area its certification DOP (Denominazione di Origine Protetta, the Italian equivalent of a protected designation of origin),” says MakingSense. But the San Marzano variety of heirloom tomatoes can be grown in other areas of Europe and even in the United States: “There are quality San Marzanos from California that are the equal of, and some which are better than, Italian brands.”
There is something to be said for San Marzanos grown in Campania, though. FoodFuser has grown cultivars of San Marzano heirloom tomatoes, but always returns to buying Cento brand DOP tomatoes. shaogo likes the Sclafani brand of Italian San Marzano tomatoes, in paste. “I have yet to find a brand that is as tasty,” says shaogo.
Board Link: San Marzano brands?