Idli is a South Indian dish made of fermented rice and lentil batter. The batter is steamed in small, round molds and served hot. Idlis are light, fluffy, and have a mild, slightly sour taste. They are a staple breakfast dish in South India, but are enjoyed as a snack or light meal at any time of the day. The combination of rice and lentils provides a healthy source of carbohydrates and protein.