Whether it's the size of a dixie cup or enough to fill the bathtub, at Yeh! Yogurt, customers are in control of their servings. Amid fuchsia walls and bright-green accents, customers pull the levers on self-serve machines as the low-calorie, nonfat delight swirls into their containers. Available flavors rotate monthly and seasonally and include options such as fudge and marshmallow, spicy pumpkin, cake batter, and piña colada. More than 40 toppings such as candies, chocolates, nuts, and farthings cascade over yogurt peaks. Other sweet options include crepes, smoothies, and coffee drinks.