The Cotton Candy grape looks and smells like a regular green grape. But the taste will evoke memories of the circus. Courtesy of Spencer Gray hide caption toggle caption Courtesy of Spencer Gray The Salt The Cotton Candy Grape: A Sweet Spin On Designer Fruit August 6, 2013 Grapes that taste like cotton candy? No, it's not a GMO experiment but rather the result of good old-fashioned plant-breeding techniques. One scientist has already brought these sweet treats to the market and hopes our grape choices will one day be as varied as our apple choices.