Sartori® Extra-Aged Fontina Cheese. Preserve. By allowing a peppery young fontina to age twice as long as usual, we find our patience doubly rewarded with a rich, deep, creamy fruitiness that only grows sweeter with time. Wisconsin cheese. Gold medal world cheese awards. rBST free. No significant difference has been found in milk from cows treated with artificial hormones. The Sartori family is dedicated to making the best cheese in the world. We thank our great dairy-farming families in Wisconsin for sharing their premium milk and conversation with our expert cheesemakers since 1939. www.sartoricheese.com.