1. Chop the boiled and peeled potato into 2 inch cubes and keep aside.
2. Heat 2 tbsp coconut oil in kadai and add mustard seeds. Add haldi, ginger, green chillies and curry leaves after the seeds splutter.
3. Add finely chopped onions and fry until they turn brown and transparent.
4. Meanwhile, grind the grated coconut with water to a smooth paste. You can ommit this step if you are using coconut milk.
5. Add half the coconut paste/coconut milk to the fried onions. Add salt; Cover and boil for another 3-4 mins.
6. Add the potato cubes and the remaining coconut paste/coconut milk. Add water if required and cook covered with 4-5 mins.
7. Serve hot with rice or even rotis.

Courtesy: http://maneadige.blogspot.com/