A water bath canner is a kitchen tool used for preserving fruits, jams, and pickles. It consists of a large pot with a lid and a rack that holds jars above the water. When the jars are filled with food and sealed, they are placed in the pot, which is filled with boiling water. This process helps kill bacteria and seals the jars, making the food safe for long-term storage. Using a water bath canner is a simple way to enjoy homemade preserves year-round. It’s important to follow safe canning practices, such as using the right canning recipes and ensuring proper jar sealing, to prevent spoilage and ensure delicious results.