As someone who once had a religious experience when I dipped a French fry into mashed potatoes, you can imagine my delight when I learned that a certain potato may increase your odds of becoming a centenarian. And? These seemingly magical potatoes are also straight-up gorgeous. Purple potatoes are a variety of potatoes eaten regularly in the “Blue Zone” in Okinawa, Japan, meaning they could play a role in helping you live to 100.