For preparing duck curry in peanut sauce, pour half the coconut milk in a vessel, heat it stirring constantly, until it begins to boil and separate.
Add the red curry paste and cook it over medium flame until a nice smell comes.
Then add the fish sauce, brown sugar and lemon grass.
Continue to cook until the colour of the curry sauce becomes dark.
Pour in the remaining coconut milk and allow it to the boil.
Toss in the duck and ground peanuts. Allow it to cook for till the duck becomes tender.
Put in the red chillies and lime leaves and salt.
Garnish with basil leaves.
Duck curry in peanut sauce is ready. Serve hot.