Wash and clean the fish and pat dry it.

Marinade the fish with marinade ingredients listed above and set aside for 15-20 minutes.

Heat oil in a pan and slightly fry marinated fish pieces on a medium heat and keep it aside.

Heat a pan (preferably in 'Kalchatti' an earthen pot) and pour required coconut oil. (Note : It will enhance the authentic taste)

Splutter the mustard seeds; add the ginger, garlic and saute for a minute.

Add the sliced onion, curry leaves, green chillies and saute till it becomes soft and translucent.

Add the tomatoes and saut'e for a minute. (Note : Do not mash the tomatoes).

Add the pepper powder and simmer the heat.

Add thin coconut milk/moonampaal and salt and mix well.

Add the fried fish pieces carefully, cover and cook the fish. As the fish is half done while frying you just need to cook for another couple of minutes.

Now pour the 2nd extract - semi thick coconut milk / randampaal and hold onto the sides of the pan and swirl it until the fish is well totally immersed in the gravy. Let it cook slowly for sometime till the fish completly absorbs it.

Remove the pot from the fire, pour the 1st extract- thick coconut milk/onnampaal; place it on low fire again for a minute and gently shake so that it gets mixed . (Note : Don't stir after the fish is cooked, as the fish might break.

Remove the pot from the fire and add some lime juice or vinegar. Top with some coconut oil in the end. Enjoy and Serve!