Grind the ingredients to be ground to a fine paste and keep aside.
Extract thick coconut milk from the grated coconut, by adding little water.
Take a pan and pour oil. Fry the onions and then saute the ground masala.
Add the prawns and saute for some more time.
Add chopped tomato pieces and required salt. Saute until the water has dried up.
Add some water and boil the mixture.
Add the pappaya pieces and cover the vessel with a lid. Simmer in low heat.
Stir the curry now and then until the gravy acquires a thick consistency.
When the pappaya pieces are cooked, add coconut milk and vinegar.
When boiling begins to start, remove from fire.
Pappaya prawn curry is ready and serve hot with rice or chappathis.