Blend 3/4 cup milk, 3/4 cup cold water, the instant-coffee frappe mix, and sugar in a blender until combined, about 30 seconds. Divide among 3 tall glasses filled with ice. Pour 2 tablespoons milk into each glass. Serve immediately, topped with cotton candy.
GREAT idea. I topped mine with gourmet cotton candy from www.fluffpop.com. A Frappe topped with caramel cotton candy! Amazing!!!!