First add the bones to the liner of the instant pot.
Add water. Water can be room temperature and for best results should be filtered.
Pour in the apple cider vinegar and salt.
Optionally, you can add other herbs, spices, and vegetable scraps for an ever more flavorful broth.
Place the lid on the instant pot and set it to seal.
Press the soup/broth button until it is on high.
Adjust the time to 4-6 hours with the keep warm function on.
After the timer is up, let the pressure release naturally.
Once the pressure is released, unplug the instant pot and remove the liner.
Pour the broth into a 1/2 gallon mason jar with a funnel and mesh strainer over it to catch any small bones. Place a lid on the jar.
Allow the broth to cool and store in the fridge for up to 7-10 days.