to the same oil, add 2 tbsp ghee and put in the fried-onion paste, ginger garlic paste, green chilli chopped, tomatoes blanched and chopped.
fry until the oil starts leaving and then add turmeric powder, chilli powder, garam masala, cumin powder and fry again till its thick and leaves out the pan easily.
at this stage, drop the paneer cubes along with the buttermilk and mix well. adjust salt and let it boil for 5-10 minutes in medium heat.
when oil starts leaving, add crushed kasuri methi and mix again.
lastly, add the white paste that we prepared in the beginning and mix again.
to this, add water to bring it to the required consistency and give it a boil for 5 minutes. serve hot with chapathi