Add ginger and garlic paste.Add coconut paste and chopped tomatoes.
Add garam masala powder, red chili powder, slit green chilies and oil.
Add chopped coriander leaves.Mix well all the ingredients.
Adjust salt and water according to the consistency of gravy.
Close the lid and let it for another 6 whistles.
Open the cooker, the bones should be cooked well.
Take into a bowl.Serve mutton bone curry with chapati, phulka, naan, parata.