Prawns Curry With Raw Mango/Chemmeen Manga Curry

Today's recipe is Prawns/Chemeen curry with (green) raw mango(Pacha maanga) added.The Mango added in the curry gives a piquant, tangy taste to the curry. To eat the mango slices from the curry itself is....This curry goes well with both rice and rotis.

Ingredients 
Prawns                 400 g (cleaned)
Raw Mango           1 medium(sliced)
Onion                    1 big (chopped)
Tomato                 1 med.(  "       )
Chilly powder          2 tsp
Coriander powder   11/2 tsp
Turmeric powder    1/2 tsp
Water                    11/2 cups 
Salt                       as per taste
Thick coconut milk  1 cup
Curry leaves           few
Coconut oil             1 tbsp

 Method
-Heat oil in a wok,add the chopped onion and saute till translucent.
-Now add the curry leaves and mango slices,saute for sometime.
-Add all the three powders and saute for a minute(till the raw smell goes)
-Now add in the tomatoes and cook till it becomes soft and  the oil separates.
-Add water and salt.Let it boil for sometime. 
-Now add the cleaned prawns and cook for 7-10 minutes.
-Lastly add the coconut milk and when it starts to boil, remove from fire.
-Serve hot with rice or rotis.