Obbattu Saaru, also known as Poli Rasam, is a flavorful and tangy South Indian soup made from the leftover stuffing of Obbattu or Poli. It is a perfect way to utilize the leftover filling and transform it into a delicious and comforting dish. The saaru is made by cooking the stuffing with tamarind pulp, tomatoes, and spices, resulting in a rich and aromatic rasam. It can be enjoyed as a soup or served with steamed rice for a complete meal.