Paste : 1 tbsp mustard seeds, green chillies and 1 " ginger.Grind it into fine paste. Once it is done. Keep aside.

First wash fish with haldi powder and salt. Twice or thrice till the dust particular of goes off. Drain the water. Then marinate the fish with haldi powder, salt, mustard oil and lemon juice. Mix.it well. Keep aside for 1/2 an hrs. Heat mustard oil in a Kadai. Shallow fry the fish in slow flame for few minutes. Don't over fry. This fish is very delicate. It will break. Once it is done then transfer to a plate and keep aside.

Take another kadai. Heat mustard oil. Fry cumin seeds let it crackle. Then add the paste. Saute it for few minutes. Add the left over Masala water. Cook till the raw smell of Masala goes off.. Add 1 cup water boil it for few minutes.

Then add fried fish. Cook it for 2 minutes or till it is gravy in consistency. Check it. If it is done. Then transfer to a serving plate.