Heat oil in the pan, put kalonji, when begin to crackle add onion mixture to the pan put turmeric powder, red chilli powder and mix it,and continue to saute over medium heat, when oil comes out from the gravy add jeera dhania powder and mix, then add garam masala powder give another mix, and now add tamarind pulp along with brown sugar, and continue to stir till the gravy is thickened now put one cup of the water boil over medium flame.