In a kadhai or a pot, heat the oil. Add cumin seeds and let it splatter. Add the sliced onion and saute until a little brown. Add garlic and ginger to the onion and stir for a minute. Now add the cumin powder, anardana powder and mix well and saute for an additional couple of minutes.
At this time, add tomato puree, salt, red chili powder, garam masala to it and cook it until the raw smell of the tomatoes is gone. Now add the cubed boiled potatoes along with the chickpeas and mix it well.
Do a taste test and add if anything needed. Cover and simmer for a few minutes along until the flavors marry. Sprinkle the kasuri methi and give it a mix.
Enjoy with hot chapatis or a paratha along with raita.