Also it said to add 3-4? cups of water to the pressure canner, we go just under the ring, or at the neck of the jar if I remember correctly.That's what the article said, it did not say why. When I bake chicken I do not add any water but wind up with a half of a cup to a cup of liquid. I thought it might have something to do with extra liquid cooking out of the meat. But you have experiences with pressure canning and I don't.
It's been awhile since we've done it.