- Dry roast all the whole garam masalas together in a pan for a few seconds. 
- Remove from the heat and when still hot add the turmeric and red chilli powder. 
- Enter Step 
- Grind the roasted whole masala along with the rest of the ingredients including the oil, to a fine paste.Curry paste is ready. 
- Grind one stalk of lemon grass in the paste and keep one to add in the curry when adding the thin coconut milk. 
- Put the thick coconut milk in a wok and bring to a boil stirring constantly. 
- Continue cooking over low heat until the coconut cream is reduced by a quarter and the oil begins to separate. 
- Add the curry paste and fry stirring frequently, for 5 minutes or till the oil separates. 
- Enter Step 
- Put in the prawn and cook for 5 - 7 minutes. 
- Enter Step 
- Add the remaining coconut milk, one stalk of lemon grass cut into 3 ” pieces, and lime leaves. 
- Bring to a boil stirring constantly, then lower the heat and simmer uncovered until the prawn  is tender. 
- Stir in basil or coriander just before serving.