Add oil and heat it well.
Add cinnamon stick, cardamoms, cloves, shahi jeera.
Add sliced onions and saute them well.
Add some salt and saute them until they golden in colour.
Add ginger garlic paste and saute few seconds.
Add mutton to it.
Roast the mutton until color changes.
Add salt as per taste, red chilli powder, turmeric powder.
Cook the masala until oil releases from the sides.
Add black peppercorn powder, garam masala powder.
Cook the gravy for few minutes.
Stir in between.
Cook the gravy until oil releases.
Add water and stir well.
Pressure cook until the mutton gets tender.
Add chopped coriander leaves.
Add slit green chilies.
Miix and cook the gravy on low heat for 4-5 minutes.