Soak the rice grains overnight or for several hours to soften, this step is optional so skip if needed.
Switch on your instant pot and add the water, coconut milk and black rice.
Select and adjust the +/- button to 20 minutes.
Place the lid on and flick the valve to "sealing" and let the unit come to pressure .
When the pressure cooking has finished allow to natural release (should take roughly 10 minutes) then turn the knob to "venting" to release any excess pressure.
Remove the lid and stir in the desired amount of sweetener (pudding will thicken more as it cools down), add the vanilla, cardamom and sweeten with condensed milk to taste.
Once cooked serve accordingly.
Notes
Cardamom black rice pudding can be eaten for breakfast or after dinner, there's no set rule so don't be swayed by the name.
Refrigerate any leftovers and consume with 2-3 days.
Feel free to add other spices you may like i.e nutmeg, cinnamon, star anise, caraway