Marinate the prawn-shrimp with the above listed ingredients "To Marinate" and keep it in the fridge for an hour.

Heat coconut oil in a pan, when its hot, splutter mustard seeds, fenugreek seeds. Add the sliced onions sauté till the onions become translucent.

Add slit green chillies and curry leaves and stir for minute. Add ginger garlic paste and all the spice-masala powders and stir till the aroma comes out.

Add the chopped tomato pieces along with little salt and saut'e well till the tomatoes turns to mushy and soft.

Add the thin coconut milk, kudampuli and mix well.

Add the marinated prawns to the kadai and cook covered till prawns are done.

Open and add the thick coconut milk and stir gently. Cover and cook for another 2 mins and remove from the heat.