I soak the dry chickpeas overnight in a lot of water. Some people add some baking soda but I don’t. Then the next morning, I drain the soaking water, put the chickpeas and enough fresh water to cover them in a pressure cooker. I add one black cardamom, a teeny piece of cinnamon, some salt and red chilli powder, and pressure cook. My method is to first cook on high until the first “whistle” of the cooker, then lower the stove to medium-low and cook for 15 minutes. This is for 2 cups of soaked chickpeas.
Once the 15 mins are over, turn off the stove and let the pressure release on its own. Then open the pressure cooker and you’ll see some water remain and perfectly tender chickpeas. Save the water as it contains nutrients.
kala channa take forever if you dont have a pressure cooker. the way i make it, i soak it for atleast 12 hours. then cook in pressure cooker. once it reaches pressure, lower heat and cook for for 25-30 mins. then I fry some onion, add the channas to it, salt, cumin powder, garam masala, red chilli. you can garnish with onion, cilantro/dhania.