Kumbakonam Kadappa is a popular South Indian side dish made with potatoes and moong dal. It is a creamy and flavorful curry that is typically served with dosa, idli, or rice. The dish is made by cooking potatoes and moong dal in a coconut-based gravy, which is then tempered with spices and garnished with coriander leaves. Kumbakonam Kadappa is a comforting and delicious dish that is perfect for a hearty meal.