Cook the cut pieces of chicken with vinegar, potatoes, salt and a little water in a pressure cooker for 10 min on low flame.
Heat oil in a pan Sauté onions, green chillies, garlic and ginger in this order.
Add crushed cinnamon sticks, cloves and cardamom and sauté, till onions turn brown.
Sauté, till the fresh smell of masala leaves.
Add the above mixture to the cooked chicken Cover and bring everything to a boil.
Add Coconut milk to the cooked chicken on a slow flame Add curry leaves
Allow the contents to boil and stir it often.
Turn off the flame immediately after it boils
Serve hot with steamed rice.