Inside Yopop's brightly colored shop, frozen-yogurt fans queue up to serve themselves any of the 50 flavors of the naturally sweetened treat. To top flavors such as strawberry banana, avocado, or cookies and cream, everything from raspberries and candy crumbles to a sweet variety of syrups pile onto each creamy concoction. Satisfying both the tastebuds and the conscience, Yopop's frozen yogurt is both low in calories and fat and rich in calcium and protein. For even fewer calories, customers can opt for the Wow Cow brand yogurt in flavors such as strawberry and peanut butter chocolate, with only 15 calories per ounce.