Cook potato either in a pressure cooker or on a stove stop depending upon your convenience. I cooked with a pressure cooker. Peel the skin and mash the potato into chunks, make sure not to smash too much.Set aside

In a medium saucepan heat coconut oil, add mustard seeds, when it crackles add onion and green chilies and 1 sprig of curry leaves fry them for about 7 minutes or until the onion becomes translucent or changes color. Switch off the flame

In a bowl mix coconut milk and water and set aside.

Combine mashed potato, salt along with onion ,chili and curry leaves mixture. Heat once again this mixture with coconut milk mixture when it starts boiling add garam masala powder and coriander powder. Mix well once again and switch off the flame.

Enjoy with rice, appam, chapathi or your choice.