Take off from stove and cool. Transfer to a blender and grind to a smooth paste with little water.
Pour this masala into a manchatty or earthern pot.
Extract tamarind juice adding enough water to the tamarind. Add tamarind extract to the pot, then add fish, salt to taste and more water if needed for the gravy.
Bring to a boil, lower heat and cook covered till the fish is cooked well. Now pour little coconut oil on top of the curry, some fresh curry leaves. Take off the stove and serve hot.
Very simple and very tasty
Excellent