Mars is calling on consumers to pick its next M&M’s nut variety. Across the US, it has rolled out three flavors: Honey Nut, Coffee Nut and Chili Nut. It asks consumers to vote online or via SMS for their favorite. Those entering the competition stand a chance to win $100,000 and earn the title of the official M&M'S Taste Tester. Voting ends June 17.