- Soak the red kidney beans overnight. Next day, cook in a pressure cooker till done Heat the oil and fry the onions for 5 minutes. add ground garam masala Add the grounded ginger-garlic paste and chili powder and cook again for 3 minutes. Add the tomato chopped or paste gr chillito this mixture and cook until well done . Add the mixture to the boiled kidney beans. Add the other spices and salt according to taste. Cook again till 15 minutes until the rajma gets nice flavor.serve hot.