100% Italian plum tomatoes from the San Marzano region. Certified gluten-free. gfco.org. Since 1935. Artisan Ingredients. Jeff Mezzetta: Fourth Generation family company since 1935. Italy's best, reimagined. Simply crafted with just five exceptional ingredients. We use butter in place of olive oil for this rich, velvety recipe that is tantalizing to the last bite. Enjoy! - Jeff. Get inspired at mezzetta.com. 100% recyclable.