Watercress Paruppu Kadaiyal is a traditional South Indian dish made with lentils and watercress. It is a nutritious and flavorful recipe that can be enjoyed as a side dish or a main course. The lentils are cooked until soft and then mashed with watercress, spices, and coconut. The combination of lentils and watercress provides a good balance of protein, vitamins, and minerals. Serve this delicious kadaiyal with steamed rice or roti for a wholesome meal.