Wash the mutton pieces and marinate with ginger, Curd, Cumin Powder, Coriander Powder, Turmeric Powder, Red Chili Powder and rest in the fridge for around 6 hours.
Peel the potatoes and marinate with turmeric powder. Mix rest of the masala along with 10 ml mustard oil to make a thick paste.Heat remaining oil in a pan and fry potatoes till golden brown in color.
Now add oil in a deep pan and add ghee to it. Add whole masalas into the mixed oil & ghee and cook for a minute. Add ginger paste to the mixture and cook for 2 minutes on low flame until the raw ginger smell goes away.