Doesn't matter how old they are, 20 minutes in a pressure cooker and they're about falling apart. Don't go over 15-20 mins or let it set too long cooling down, or that tough old bird will be a mess of meat and little bitty bone soup...
I go 20mins and rip the weight off. Remove the meat to use in whatever.
Add the bones back to the pot after chopping them up a bit, chopped celery, carrots, onion, garlic, tablespoon of vinegar. Cook for a few hrs, let it cool down refrigerate. Take the fat off the top next day, strain, yummy healthy bone stock.
Nice thing about the pressure cooker once the weight starts hopping you can turn the burner down on low and it holds steady 250+ degrees.
I go 20mins and rip the weight off. Remove the meat to use in whatever.
Add the bones back to the pot after chopping them up a bit, chopped celery, carrots, onion, garlic, tablespoon of vinegar. Cook for a few hrs, let it cool down refrigerate. Take the fat off the top next day, strain, yummy healthy bone stock.
Nice thing about the pressure cooker once the weight starts hopping you can turn the burner down on low and it holds steady 250+ degrees.