Wash the rajma and allow it to soak in water overnight. Wash it again and pressure cook with 2 cups of water, 1/2 tsp salt, and turmeric. Once the rajma is soft and squishy, remove it from the heat and keep it aside.

Finely chop onions and keep aside, grate the tomatoes and keep them aside. Make a paste of ginger, garlic, and green chilies.

In a deep-bottomed pan, add mustard oil, when it gets heated add green cardamom, black cardamom, cinnamon, clove, and peppercorn. Once they become fragrant, add onions and cook till they are golden brown. Now add the tomatoes and cook on high for 4-5 minutes. Add ginger- garlic-chili paste, cumin powder, coriander powder, and black pepper powder.

Cook till the spices become fragrant and oil starts leaving the sides of the pan. Add rajma masala. Now add the rajma and one cup of water. Mix well and cook covered for 10 minutes. Once done, add the ghee. You can garnish with coriander leaves. Your rajma is ready.