Boil 1-2 ltrs of water in a large pan,add washed Paalak and boil for 10 min at medium flame, cool and grind.
Heat 4 tsp of oil in heavy bottom pan and add the Cumin seeds,Ginger-Garlic paste,Termeric powder saute for 30-40 seconds then add the finly chopped Onions, add little salt.Saute for 2-3 min or untill onion turns slightly brown.
Then add finly chopped Tomatoes, Coriender powder, Cumin powder and Red chilli powder. Cook for 5 mins.
Then add the chopped Green chillies and Kasoori Methi.
Then add ground Paalak, cook till the Oil separates out.
In the mean while fry the Potato cubes in a pan with some oil( 90% cooked)
Once the Oil seaparates out from the gravy add Potato cubes and salt to taste. Cook for 5-6 min.