Paruppu Rasam, also known as Dal Rasam, is a comforting and protein-rich soup made with cooked lentils, tamarind, and a blend of spices. It is a staple in South Indian households and is often served with rice and a side of vegetables. To make Paruppu Rasam, cook toor dal (pigeon pea lentils) with tomatoes, tamarind, and spices. Blend it into a smooth paste and add it to a tempering of mustard seeds, cumin seeds, curry leaves, and asafoetida. Simmer the rasam for a few minutes and serve hot with rice.