For preparing Tuna Fish Curry Easy, first heat oil in a pan.
Splutter mustard seeds.
Add ginger to the heated oil. Take care to make the flame very low so as not to overcook any ingredients.
Add salt and saute the ginger till it turns brown.
Add fish masala to it and saute until the color of masala becomes red.
Add coconut powder to cooked masala and stir until it gets mixed with masala.
Add garlic, green chilly and curry leaves to it and saute well.
Add fish to it and mix well with the mixture until fish is smeared with the cooked masala.
Add chopped onions, tomato and kudampuli to the mixture.
Add water to the level, till the fish is immersed and let it boil in medium flame.
Once it boils, cook it for another 15 minutes in low flame.
Tuna Fish Curry Easy is ready.