Heat the oil in a pan fry redchillies then add curryleaves.Add sliced onion fry till golden brown.do not burn as it would change the colour of the dish.
Add chopped ginger and garlic fry till raw smells goes.
crush the peppercorns and cinamon coarsely.
Add the spice powders and crushed spices and fry for 2 mins
Add the chicken pieces and coat with spices then add thin/second coconut milk and cook till chicken is done
When chicken is done add the cashew paste and thick coconut milk and simmer for 2 mins.