Wash the black beans and soak in enough water for about 5 to 6 hours or overnight.
After soaking, discard the water used for soaking and rinse the black beans again in fresh water for 2 to 3 times.
Transfer the black beans to the inner pot of instant pot.
Also add washed spinach to the inner pot.In a blender, add tomatoes, green chilies and 2 cups of water and blend to make the base of the gravy.
Transfer this grind mixture also to the inner pot.
Add the remaining 2 cups of water, enough salt and all the spices to the inner pot, mix everything well.
Cover the instant pot with lid in sealing position, press manual and cook in high pressure for 7 minutes. It will take a few minutes for the instant pot to build up pressure and start the cooking, so you will need to sit back and wait until the cooking is done. Once the cooking is over, the instant pot will beep.
Once the cooking is done and instant pot beeps, press the 'keep warm/cancel' button and wait for the instant pot to naturally release the pressure which will take another few minutes of time.Once the pressure is all naturally released, carefully open the lid by turning to the venting position.
If you wish to thicken the gravy further, press the saute function, adjust to high and simmer for another 2 to 3 minutes. The delicious, easy and healthy vegetarian/vegan black bean spinach curry is ready to serve!
Enjoy the black bean spinach curry with rice, quinoa or anything as you wish for lunch or dinner. Instead of garlic powder, you may use 2 to 3 cloves of fresh garlic which can be blended along with the tomatoes or you can crush them and add to the curry. You may also use a small one inch piece of peeled ginger, which can also be added to the blender while making the tomato mixture or you can use ginger powder also if you wish.If you want to retain the bright, green color of spinach leaves and want to enjoy a fresher, crispier texture for the leaves, you can add the spinach leaves after the initial cooking is done in the instant pot (before simmering the contents). I added the leave early for this recipe, so the leaves got cooked along with the beans allowing the flavors to blend in more. Based on your preference, you can do it both ways.In this chickpea spinach curry recipe (in pressure cooker), I added the spinach leaves later on to retain the color and texture of the spinach leaves.