Celeiro
One of an increasing number of organic eateries in Rio, Celeiro is a combination café and health-food store that's popular with models and other body-conscious locals. The restaurant operates on a pay-by-weight system, and the expensive buffet features a staggering 50 types of salad, as well as oven-baked pies, whole-wheat pastries, fish and chicken dishes, and low-calorie desserts.