Canning can be done at home or commercially and involves several pieces of equipment. For water bath canning high-acid foods, you will need jars, lids, a pot, and rack. Pressure canning is needed for low-acid foods and uses a pressure canner with a gauge or weight, vent pipe, and gasketed lid to reach high temperatures safely. The process involves packing jars, processing under pressure for a set time, cooling the canner before opening, and allowing jars to fully seal on their own overnight.