How to make Macher Jhol-
Wash the fish fillets. Make them dry and then coat them with salt and turmeric powder. Set them aside.
Now heat the oil in a wide, heavy bottomed non-stick pan. Add black onion seeds to the oil, and fry until you smell a nice aroma.
Add the fish fillets, one at a time, frying each side for 5 minutes or until they turn golden brown. Keep them aside.
Now add chopped onion and ginger in the same oil, and fry for 10 minutes.
Add turmeric, salt, chilli powder, cumin powder and coriander powder to the above. Stir for 5 minutes.
Now add tomato puree and water; stir well. Cover the pan and bring the above to boil.
Add the fried fish fillets and fresh green chillis to the above, and turn down the flame and cook them for 25 minutes.
Macher Jhol is ready to serve. Garnish it with fresh coriander leaves.