Place the whole chicken carcass on the interior rack of your Instapot.
Add vegetable scraps (or fresh vegetables).
Add peppercorns and salt to taste.
Add apple cider vinegar (used to help the bones release nutrients and minerals).
Add any additional spices you choose.
Fill the Instapot to the maximum fill line with water (DO NOT OVERFILL).
Using a spatula, push all veggies underneath the waterline, as best as you can.
Close the Instapot and secure the lid.
Pressure cook using high pressure on the meat and stew setting (about 2 hours).
Once cook time has expired and the Instapot has cooled, allow the Instapot to depressurize. Once pressure is released, open the Instapot and strain the broth into a large pot.
Choose your finishing method. Refrigerate homemade broth for up to one week, or freeze. To make the broth shelf stable, pressure can broth in a pressure canner.
Follow these instructions to pressure can broth.
Prepare canning jars by heating jars, and keeping them warm until ready to fill.
Fill canning jars with hot broth. Leave 1" headspace.
Clean the rim of the jar with a paper towel moistened with vinegar.
Add a NEW metal canning lid.
Secure finger tight using a metal ring.
Processing time and pressure depend on your altitude. See Notes below.