For preparing fish fillets smoked in banana leaves, marinate the fish pieces in salt and lemon juice. Keep aside.
Remove the seeds of red chillies and soak in vinegar for 15 minutes and grind well adding little vinegar and mustard seeds. Keep aside.
Heat oil in a pan and saute chopped onion adding, salt and turmeric powder. Saute till transparent.
Add the ground paste into onion and fry till the oil seperates. Add pepper powder.
Immerse the banana leaves in hot water for 2 minutes and drain.
Rub the masala paste over the fish pieces and wrap in the banana leaves. Tie it with banana plant fiber(vazha naaru).
do the same with other fish piece also.
Place a griddle on fire and place the fish packets. Cook both sides finely in low flame.
Fish fillets smoked in banana leaves is ready to serve with rice.