Soak rajma, the previous night.
Put tomato in hot water and peel ths skin. Cook rajma and tomato with salt in 4 cups of water.
When rajma is cooked strain the water. Grind rajma in a mixie and mix it with the strained water.
Peel the small onions cut into small pieces.
Take a bowl.
Fry onions in butter. When the onions are fried, add chilli powder, soup, tomato sauce,boil for a few minutes and remove from fire.
Add pepper powder, cut coriander leaves and Serve when hot.