In a mortar and pestle, crush from shallots to coriander into rough paste.
In a pressure cooker, heat oil. Saute the crushed mixture till raw smell is gone.
Add the mutton bones, turmeric and salt and toss.
Add four cups of water, adjust seasoning and pressure cook for 4-6 whistles.
Switch off and allow the pressure to go on its own.
Add more pepper as needed, garnish with coriander and mint leaves and enjoy hot.