Certified Gluten-Free. Non-GMO Project verified. nongmoproject.org. Since 1935. Family Co. Hand selected. Mezzetta Family Co. While in Southern Italy, we discovered Castelvetrano olives - perfect for entertaining. The mild, buttery flavor can make an olive lover out of anyone. Fourth Generation Family Company. - Jeff Mezzetta. mezzetta.com. Get inspired at mezzetta.com. 100% recyclable. Product of Italy.