Ingredients 

• 500 gms Hilsa fish (Cut into pieces and washed)
• 4 tsp of Mustard powder / grinded mustard seeds
• 3 green chillies
• 1 tsp chilli powder
• 3/4 tsp paanch-phoran
• 1 tsp turmeric powder
• 1/2 cup yogurt
• 1/2 cup coriander leaves - finely chopped
• 4 tbsp cooking oil. (mustard oil preferable)
• Salt to taste

• Take the yogurt in a small bowl. Add mustard powder, turmeric, chilly powder & salt - mix it well. 
• In a frying pan, heat oil, add paanch-phoran & green chillies. 
• After a few seconds add the above mixture to it. 
• Fry for 2 minutes till oil starts separating. 
• Now put the fish pieces and add two cups of water. 
• Boil in medium heat until the fish is cooked and the gravy is of desired consistency. 
• Garnish with coriander leaves