Great, thanks Dave! I have a All American 21 pressure canner and went to 15 for 100 minutes, my elevation is 1237'. I just shut everything down and popped the lid, six pints bubbling away in there. It's about 50º and I'm just going to let things sit for a half hour, then take the jars out. Thanks again, you are my food safety guru! RAY
I hope you waited for the canner to cool down and lose pressure gradually and naturally.... That extended time is added into the "safe food" time.... example : 100 min. of pressure after expelling the air in the canner and jars... the probably 20 minutes of cool down time when the pressure is naturally dropped....