Home canning has changed greatly in the 180 years since it was introduced as a way to preserve food. Scientists have found ways to produce safer, higher quality products. The first part
of this publication explains the scientific principles on which canning techniques are based,
discusses canning equipment, and describes the proper use of jars and lids. It describes
basic canning ingredients and procedures and how to use them to achieve safe, high-quality
canned products. Finally, it helps you decide whether or not and how much to can.