Take a pan and the oil into it. Heat it on a normal flame and fry the potatoes in it. Keep it out and keep it another plate.
Now in the same pan of hot oil properly fry the paneer and add the fried paneer into the cold water.
Again heat the ghee and add the cumin seeds and keep it spluttering.
Add the turmeric powder, cumin seeds, some water and ginger paste too.
Keep it on stir for 3-4 mins
Now add the garam masala, sugar, salt, green chilies and potatoes in above mixture. Cover the pan and keep it on heat till the potatoes are done.
Now also take out the paneer from the cold water and include it in above.
Add the milk and some more water and keep this mixture on heat for more 3-4 minutes until its steams.
Now you can serve it hot with rice.