In this articleMCDThe purple coloring of CosMc's Tropical Spiceade comes from the mix of lemonade, pineapple flavoring and dragonfruit.Nearly six months since McDonald's opened its first CosMc's location, the hours-long drive-thru lines have died down, but the chain is just getting started.The burger giant created the spinoff using one of its lesser-known McDonaldland mascots, CosMc, an alien who loves McDonald's cheeseburgers. While unveiling CosMc's at an investor event in December, McDonald's CEO Chris K ...