Pressure Cooker Bone Broth

"The recipe script brings the cooker to pressure three times automatically- that way the cooker is gaining and losing pressure at intervals and bubbles of the boil and constantly tossing the ingredients around in the pressure cooker. This can either be done automatically, using the Instant Pot Smart recipe script, or manually as described below. To make the process less intense, when making the broth without a programmable pressure cooker we only bring the broth to pressure and back twice...."