Method of Preparation :
Clean the fish. Do not slice. Make slits at a few places on both the sides.
Heat oil and ghee together in a pan. Fry onion paste till reddish brown. Sauté well by adding garlic and ginger paste. Add chopped tomatoes, salt, turmeric and chilli powder. Sauté well till the oil separates and add beaten curd, green chilli paste and sugar. Fry for 3minutes and add 11/2cup water.
Add the fish when the water comes to a boil. Cook on medium heat till the fish is done. Remove from fire when the water evaporates and the oil separates.