Heat mustard oil in frying pan or pot, put onions fry till its lightly brown and soft not too much then put ginger garlic paste and saute then put zeera, haldi, dhaniya, crushed chilli powder, curry patta, when aroma comes then put chopped tomatoes(i put half chopped tomatoe tin) if you put fresh tomatoes let it get soft and juicy then add coconut milk and half lemon squeeze.

Now add salmon only for 5 minutes and turn off gas dont turn fish if you want really soft but make sure fish is dipped in masala and if you want just turn another side for a minute. Serve with Rice or coconut rice.

COCONUT RICE:
In water put salt, coconut milk (i put less then 100 gram coconut in 1 cup rice) then put rice put 1 onion cut in square and dum rice (as pilao style not drain one) and last put garlic cloves few not chopped just whole for smell..

Tip: if you don't like coconut taste too much put less coconut milk in both. light taste will be nice aswell.