Blue Cotton Candy Milkshake. Add 1–2 drops of blue food coloring. For toppings, blue rock candy, blue marshmallows, whipped cream with blue edible sprinkles. Purple Cotton Candy Milkshake.

Cotton candy is a favorite carnival snack. The melt-in-your-mouth treat has even been used as a beverage garnish. While cotton candy is popularly served at fairs and festivals, you can also make ...