Marinate the cleaned chicken pieces with ginger-garlic paste and keep aside for 30 minutes.
Make a paste with the green chillies.
Mix together the curd, green chilly paste, pepper powder, chilly powder,coriander leaves and salt and apply this paste on the chicken pieces. Keep aside for one hour.
Heat the oil in a pressure cooker.
Splutter mustard seeds.
Add the sliced onions and fry till slightly brown.
Add the chicken to this along with the diced potatoes and enough water to stay slightly above the chicken and mix well.
Close the pressure cooker and cook for half an hour.
Open the pressure cooker and add the coconut milk and mix well.
Cook again for 15 minutes.
Tips:
1)In place of pressure cooker, deep pan can also be used.
Serve with chappathis, idli, dosa etc.
This curry does not require the addition of turmeric powder.