When you boil soaked black channa , add big cardamom and salt to it too.
Then take out 2 tbsp of channa and rest make a paste of it with the green chilli.
Heat oil and add asafoetida , cumin and carrom seeds and the add ginger garlic paste.
Once ginger - garlic is done, add tomato puree and add dry masalas like coriander, turmeric, red chilli and cumin powder and let the masala cook on slow flame.
Now add the channa paste and mix in masala well and cook it on slow flame till all of it becomes a big lump together.
At the moment add the whole boiled chanas and add 1 cup water with salt , kasoori methi and garam masala and cook on slow flame till it starts bubbling up. Make sure you keep mixing it together.
To this add chana masala, lemon juice and serve with some ghee and boiled rice.