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