Take ½ liter of water in a kadai. Put 3 pieces (250 gm) of Katla fish. Add ¼ tsp of turmeric powder and ½ tsp of regular table salt. Boil it on a medium to high flame for 10 minutes.
Transfer them to a plate, shred and debone them.
Heat 2 tbsp of refined oil in a frying pan. Put 1 tbsp of finely chopped pieces of ginger and garlic and 2 medium-sized onions. Fry them for 1 minute.
Then add ½ tsp each of coriander powder, dry red chili powder, cumin powder, garam masala, turmeric powder, salt, and ¼ tsp of black pepper powder. Fry for 2 minutes.
Add the fish, mashed potato, and 2 fresh green chilies (finely chopped). Mix Them.
When dry, add ½ tsp fresh lemon juice, another ¼ tsp of garam masala powder, and ½ cup of fresh coriander leaves (finely chopped). Turn the flame off, mix, and transfer it to a plate. Let it cool.
Take some stuffing.
Make small balls. Keep all balls aside on a plate for 5 minutes.
Take 2 tbsp of corn flour and refined wheat flour, ¼ tsp of black pepper powder, and ¼ tsp of salt in a bowl. Add ½ cup of water. Make a smooth-flowing batter.
Take enough bread crumbs.
Put one fish ball in the batter. Coat it nicely.
Put it on bread crumbs.
Coat it.
Repeat the steps to coat all the balls. Keep it on a plate aside for 5 minutes to set properly.
Heat enough cooking oil in a pan on a high flame. Reduce the flame to medium when hot and put the fish balls one by one in it. Fry them for 5 minutes. Remove when golden brown.
Put them on tissue paper to drain excess oil.
Your fish balls are ready. Lay them on a plate. Serve hot.