Cento Certified San Marzano Whole Peeled Plum Tomatoes are grown in the Sarnese Nocerino area of Italy, renowned for its especially fruitful soil as a result of its proximity to Mount Vesuvius. Our San Marzano tomatoes are certified by an independent third-party agency to ensure their superior quality. Perfect for making homemade sauces, our tomatoes are hand-picked only when ripe, giving them a distinctively sun-ripe and sweet taste.