Kalkandu Pongal is a special type of sweet Pongal made with rock sugar (kalkandu) instead of jaggery. It is a rich and creamy dessert that is often prepared during festivals and special occasions. To make Kalkandu Pongal, you will need rice, moong dal, rock sugar, ghee, cardamom, and cashews. The rice and lentils are cooked until soft and then mixed with rock sugar syrup and flavored with cardamom. It is garnished with roasted cashews and served as a sweet delicacy.