Soak the dried chickpeas overnight or for about 8 to 10 hours
In a pressure cooker , add the chickpeas, tea bags, salt, baking soda and the spices mentioned above.
Add enough water to soak the chickpeas and pressure cook for about 5 to 6 whistles.
Save the water from the cooked chickpeas for the gravy.
Prepare the gravy
Heat oil in a large pan and add the onion paste and sautee well
Next add the ginger garlic paste and keep stirring till the raw smell goes away.
Next add the tomato paste and cook well covered until oil floats on top
Add the spice powders mentioned above and mix well
To this add the cooked chickpeas along with the dark brown water in which it was cooked
Mash the chickpeas well till you get a thick gravy
Tempering
Heat 1 tbsp oil
Add the chopped garlic and slit green chillies and fry till browned
Add the red chilli powder and cumin powder and switch off flame
Add this to the gravy and mix well.
Garnish with sliced chopped coriander leaves, lemon and raw onions .Enjoy with Rotis, bread or Rice !
Notes
Using canned tomato paste will give a nice color, so even if you are using regular tomatoes in this dish, add a little paste for the bright color, but make sure to adjust the quantity so it does not get too sour.
If you do not like too much of a sour taste in this gravy, adjust the dry mango powder and pomegranate powder as needed, as the gravy is already tangy from the tomatoes and lemon juice that we add in the end.
Crush the chickpeas with the back of the ladle to get a nice consistency for the gravy.
The addition of tempered oil or ghee with garlic, green chilies, red chili powder, and cumin powder to the gravy makes it taste even better, so do not skip this step.
Soak the tea bags along with the chickpeas overnight, and that will help get the nice deep color.