Clean the fish pieces and marinate with 1/2 of turmeric and salt for 30 minutes atleast

Then heat the oil in a wok and fry fish pieces till golden brown.keep aside once done

Now fry the eggplant & potato in the same oil.keep aside once done

Now add in the remaining oil.

Add panch foron and onion and fry till soften.

Now add ginger paste, tomato paste or tomato puree into the fried onion and again fry.

Now add the potatoes and eggplant and fry. Then add cumin powder, red chili and turmeric powder and little water to it and stir.

When oil separates add salt and fry for few minutes. Now add the fried fish and again fry it for 1 minute and after that add water and reduce the heat and let the gravy boil.

When the potatoes have cooked take off heat and garnish the gravy with garam masala powder,chopped coriander leaves and green chilies

Serve with steamed rice.