Kalkandu Pongal is a special variation of sweet Pongal made with rice, jaggery, and rock sugar (kalkandu). It is a rich and indulgent dessert that is often prepared during festive occasions. The rock sugar adds a unique texture and sweetness to the dish. Kalkandu Pongal is typically garnished with ghee-roasted cashews and raisins, making it a delightful treat for those with a sweet tooth.