Soak chana (brown chickpeas) overnight or for at least 8 hours.
In a mixer jar, add the Ingredients under "Curry Paste". Without adding any water, make a smooth paste and keep it aside.
Press SAUTE mode on Instant Pot. Once hot, roast fresh coconut for a minute. Roast on low heat and ensure it doesn't burn. Switch off. Once cooled to room temperature, make a smooth paste by adding little water to it.
Again, press SAUTE mode on Instant Pot. Add coconut oil to the POT. Once POT is hot, add onions and saute until onions turn light brown. I have used shallots ( Indian small onions). You can use regular onion as well.
Now, add the curry paste and cook for a couple of minutes.
Drain the water from the chickpeas and add it to the pot. Give a mix. Add 1 cup water. Check for salt & spices. Adjust if needed.
Close the pot with the lid. PRESSURE COOK for 30 minutes on high.
Release pressure NATURALLY.
Once the pressure has released naturally, add the ground coconut paste and cook on SAUTE mode for 5 minutes. Cook till you reach the desired consistency. If you want the curry to be runnier, add more water. If you want the curry to be thicker, let it be on saute mode for few more minutes till the water reduces.
In a pan, add some coconut oil. Once hot, add mustard seeds, red chilli, green chilli ,curry leaves, asafoetida. Once mustard splutters, switch off. Add the tempering to the cooked curry. Garnish with coriander leaves. Serve hot.