first oil 1tbspn in pan , add 1 chopped onion fry till brown , add 1chopped tomato fry it for while ,1 green chillies , 1tsp of ginger- garlic paste, little mint leaves , 1tsp of red chilly powder , 5-6 peppercorn fry for 2 mins , keep it aside and cool it then grind it smooth paste . next step .................... take a pan add 2 tbspn oil , little curry leaves , 1/2 chopped onion fry it , add 1/4 chopped tomato , add grind masala fry for 2 mins then add 1/4 kg prawns, add salt & closed the lid for few mins . garnish with corriander leaves . prawn curry ready . try it & plz reply me ...