Using kitchen twine, tie together the rosemary, thyme, and parsley.
2 or 3 (4-inch) rosemary sprigs, 2 or 3 (4-inch) thyme sprigs, 2 or 3 (4-inch) parsley sprigs
In the electric pressure cooker, combine the bones, onion, carrots, celery, bay leaves, peppercorns, and salt.
bones from a chicken, 1 large onion, 2 large carrots, 2 celery stalks with leaves, 2 bay leaves, ⅛ teaspoon black peppercorns, 1 teaspoon kosher salt
Drop the herb bundle on top, then add the vinegar and 8 cups of water.
1 tablespoon apple cider vinegar
Close and lock the lid of the pressure cooker. Set the valve to “sealing,” then select HIGH manual pressure and set the timer for 2 hours.
When the cooking is complete, hit Cancel. Allow the pressure to release naturally for 20 minutes, then quick release any remaining pressure.
Once the pressure gauge drops, unlock and remove the lid.
Cool the broth to room temperature, then strain it through a fine-mesh strainer lined with cheesecloth. Discard the solids.
Transfer to storage containers.