Tender lentils slow-simmered with warming turmeric, finished with a sizzling tarka of golden ghee, roasted cumin, and fresh coriander.
Pressure-cook the soaked rajma with 3 cups water and salt until completely soft, about 6-8 whistles.
Heat mustard oil until it just smokes, then add cumin seeds and let them sizzle.
Fry the onion until golden, add ginger-garlic paste, then the tomato puree and chili powder; cook until the oil separates.
Add the boiled beans with their cooking liquid and mash lightly.
Simmer 20-25 minutes on low heat until thick and creamy.
Serve hot with steamed rice.