OPTIONAL: Brown meat in a roasting tray in the oven for 1 hour at 175 degrees – this releases the juices
Add your bones with any juice, veg and vinegar to the slow cooker or crock pot. Fill pot with water so that bones are covered and simmer for 24 hours.
When Broth is cooked, strain it.
DO NOT feed hard cooked bones to your dog. If any bones are still hard you can strip the bones of any meat and keep the meat and veg for a meal. Chicken bones will usually be soft enough to eat, but use care.