In a mixing bowl add mutton, curd, ginger and garlic paste, haldi, red chili powder, coriander powder, cumin powder and salt and mix everything properly and keep aside
Clean and chop onions and tomatoes
In a pressure cooker heat oil, then add chopped onion and saute up to golden brown
In the meantime grind green cardamom, mace and nutmeg together
When onion is brown add marinated mutton to it and saute it properly
When mutton is totally dry 1cup of hot water and chopped tomatoes and close the lid and cook for 2 to 3 whistles
Let the pressure die naturally
When pressure released open the cooker and keep it on the gas again
Now add grinded masala and coriander leaves and cook for 5mins on simmer