Chop the onion in slices and also chop the tomatoes. Grind 1 inch ginger, 6-7 garlic cloves and 2 green chilli in a blender and make a paste of it. Wash and peel the raw potatoes and then cut it into pieces.
Heat oil in a pressure-cooker, add cumin seeds, asafoetida, cloves and bay leaf, saute it and then add sliced onions into it, Cook it till it become golden brown and then add ginger- garlic and green chilli paste into it, cook it for 1 minute and then add turmeric powder, red chilli powder, coriander powder and salt into it. Cook all the masalas on low flame.
Then add chopped tomatoes into it. Saute till the tomatoes become pulpy. Then add brown chana and potato pieces into it. Mix well and cook it for 5 minutes on medium flame with the masalas.
Then add garam masala powder and 4 cups of water into it. Mix it and then cover the pressure cooker with its lid and then cook it for 4 whistle on high flame and cook it for 3-4 minute on low flame and then switch off the flame.
Open the lid when the pressure reduces completely and then serve hot.
