Rinse the mutton ribs and pat them dry
Trim excess fat if needed
Marinate with salt, turmeric, chili powder, ginger-garlic paste, yogurt, and spices
Rest the ribs for at least 1 hour or overnight in the refrigerator
Heat oil in a heavy pan or pressure cooker
Add whole spices if desired
Sear the ribs until browned on all sides
Add sliced onions and cook until golden
Add tomatoes and cook until soft
Add the marinated ribs and mix well
Add water as needed
Cover and cook on low heat until the ribs are tender
If using a pressure cooker, cook until soft and release pressure naturally
Finish with garam masala and chopped coriander
Cook uncovered for a few minutes to thicken the gravy
Serve hot with rice, roti, or naan