Clean fish with curd first and then with water. Grind mustard in Mixi, adding little by little water and grind it to fine foam like paste. Mix all other ingredient with it and apply on fish to cover it with paste. Allow the fish to marinate for 30 min to 1 hr.
COOKING:
In a non stick dosa pan , pour 3 tsp of oil and fry the fish on both the sides. Fry till it becomes brown color.
TIPS:
This can even be baked in the oven by adding 2 tsp of oil while mixing the ingredients.
Fish can be deep fried in oil.
Recipe by Sashi Recipes at https://www.sashirecipes.com/fish-frymeen-varuval.html