1. To remove impurities from jaggery: Boil jaggery with a little amount of water till it dissolves. Filter and discard the impurities. This jaggery water can be added to the recipe.
2. If you are not conscious about calories, feel free to add another 4 tbsp of ghee. You will have a taste of heaven.
3. The pongal thickens on cooling. Reheat and serve, the consistency will be back. If needed add a little water.