Wash rajma for 2-3 water and soak for over night or 6-7 hour in normal water

Boil rajma in cooker with add salt and 2drop oil when the comes 4 whistle in slow gas

Heat pan add oil cumin seed pinch of hing then add garlic ginger paste and saute well

Now add chopped onion and when the till it brown color then add tomato puree in to and close the lid and boil for 2-5 min

Now open lid and mix well add some spices like turmeric, red chilli, garam masala, dry mango powder and saute well for 5 min

When oil comes out in the gravy add boil rajma in pan/kadai add salt as per taste & add some water as per your requirement