Simple Paruppu Kadaiyal is a comforting and nutritious South Indian lentil dish made with toor dal, spices, and a tempering of mustard seeds, curry leaves, and red chilies. The dish is easy to make and is often served with rice or roti. The toor dal is cooked until soft and then mashed to a smooth consistency. It is then tempered with mustard seeds, curry leaves, red chilies, and a blend of spices. The result is a flavorful and wholesome lentil dish that is perfect for a simple and satisfying meal.