Fry the coconut pieces with a little salt and turmeric powder till golden brown. Grind all the roasted spices with onion and garlic. Mix with meat and add the fried coconut. Add water , sliced green chillies, turmeric powder, ginger, curry leaves to the meat. Mix well. Cover and cook on a very low fire until the meat is tender and gravy dry. Heat oil in pan. Season with mustard and onion. Add meat and fry until oil separates.