in its high-pressure setting. the cooking time should be set to five minutes.
at the end of those five minutes, you need to turn the pressure cooker off. make use of the quick pressure release option, so the valve drops to zero in a matter of seconds. the potatoes should pass the fork test. in case they don't, you can repeat this step for a few moments more.
once they pass the fork test, you can transfer the potatoes into a huge bowl. a potato masher will be helpful for the next step.
you need to mash the potatoes till they all reach a uniform silky texture. pour in the melted butter and 