Heat oil in a pressure cooker add onions and saute till golden brown. Add mutton and saute on high heat for 5 mins, then add garlic paste. Now add yoghurt and Ashok Meat Masala. Add tomato puree, salt and green chillies. Add water and bring to boil. Close the lid till 5-6 whistles. Garnish with fresh coriander and mint leaves. Serve with roti or rice.