Certified Gluten-Free. Sulfite free. Non GMO Project Verified. nongmoproject.org. Since 1935. Being sulfite free, we sacrificed bright color for these dried tomatoes, but made up for it in flavor. Fourth generation family company since 1935. - Jeff Mezzetta. mezzetta.com. nongmoproject.org. Get inspired at mezzetta.com. 100% recyclable.