Adapted from somethingswanky.com
3.4 ounce package (8-serving size) Cherry Jell-O gelatin
Line an 8x8 baking dish with two layers foil. Pour the cola in a medium-sized mixing bowl. Microwave for 2 minutes, until boiling hot. Whisk in the gelatin until dissolved. Pour into the lined pan. Refrigerate for at least 3 hours or until firm. To serve: lift Jell-O out of pan by lifting the foil lining. Invert onto serving plate and peel away foil. Cut into shapes or cubes.