how long to hot water bath jam
Turn the burner under the canner to its highest heat setting, cover the canner with its lid and heat. until the water comes to a full boil. If the jars were pre-sterilized, boil the jam or jelly gently for. 5 minutes. If hot, clean jars were used, process the jam or jelly for 10 minutes. (If you are at an. altitude of 1000 feet or more, add 1 minute of sterilizing time for each 1000 feet of altitude.) The. water level in the canner should be 1to 2 inches above the tops of the jars.