Peanut butter is purely American, taking its rightful place on 95 percent of our pantry shelves. The only other food item I could find that is as familiar on American shelves are canned foods. Ninety-eight percent of Americans have canned foods in their kitchens, and that includes canned vegetables, soups, broths and fruits. We love peanut butter. Americans eat enough peanut butter in a year to make more than 10 billion peanut butter and jelly sandwiches. That’s about $800 million worth.