What you need? Ghee, onion, chilli, tomato, turmeric powder, chilli powder, bafat powder, cumin powder, salt and potato.
Well, fry the onion with some oil till it's brown. Then add chilli with some ghee and tomato. Stir well and then add turmeric powder, chilli powder, bafat powder, cumin powder and some salt.
Once the masala is ready, add the potato with little water and cook well. And ur potato masala is ready to serve. Best to have with chapati.