Simple sambar is a popular South Indian dish made with lentils and vegetables. It is a flavorful and tangy stew that is usually served with rice or idli. The lentils are cooked until soft and then mixed with a tamarind-based spice mix. Vegetables like drumsticks, carrots, and potatoes are added to the sambar for extra flavor and nutrition. It is garnished with fresh coriander leaves and served hot.