- heat the oil in the pan and temper the mustard and broken urad dal and add onion and saute it for 2 mins 
- add ginger garlic paste and mix it 
- add chopped aloo and mix well 
- add chopped tomato and mix it. 
- make a paste of grated coconut, roasted gram and fennel seed 
- add salt, turmeric powder and curry masala and mix it 
- add boiled rajma and mix well and allow to cook for 2 mins 
- add coconut paste and 4 glass of water and allow to until it becomes gravy consistency 
- now rajma aloo curry is ready to serve