Clean and wash the fish pieces and Marinade with turmeric and little oil.keep it aside.
Grind Make it smooth paste Of spices ingredients
Heat coconut oil in a pan Add mustard seeds. Once the seeds start spluttering, add Onion puree cook till transculant then add tomato puree
And ground Spices paste and cook till oil separate from spices .Put the fish into the pan, and add salt 1 cup of water. Mix careful don't break the fish
Bring to a boil, and lower the heat to a simmer. Add curry leaves and simmer for 15 minutes.
Garnish with coriander chopped and coconut grated served hot with rice