Home canning is a science. You may think fondly of the jars of jellies or green beans that your grandmother canned. The truth is many people get sick from eating home canned items that did not follow recommendations. Every year universities are doing research on canning methods and new recipes. This research is the basis county extension’s recommendations.

Water bath canning is the easiest type of canning to learn. But even that is more complicated than putting jars of food in boiling water. The University of Georgia has led research to know exactly how long to leave specific jars in the boili...