Heat the oil and fry the fish.

Then add some more oil and add the black cumin.fry 1 minute.

Then add popy seeds paste and fry well.

After 7 minute add mustard paste, sour card, green chilli paste, salt, turmeric,sugar.

After 2 minute add some water.

Then add the fish and sim the gas.

After 10 minute add coriander leaves and switch off the gas and serve with rice.