Keep the ingredients ready
Take the washed bhangon fishes and marinate them with salt, mustard paste, ginger paste, garlic paste, green chillies and lemon leaves.
Once all the ingredients are mixed well, place them on a banana leaf. Sprinkle 6-7 tbsp mustard oil on top of them.
Wrap the ingredients in the banana leaf and tie with a string carefully to make a small packet.
Insert the packet in a tiffin box.
Now, take a pressure cooker and put some water in it. Place the packet inside the pressure cooker. Cook for four whistles.
Let the pressure release normally.