Kerr Jar

A Kerr jar is a type of vacuum-sealed container used for storing food to keep it fresh longer. It creates a tight seal by removing air, which slows down the growth of bacteria and mold. The jar usually has a lid with a rubber gasket that ensures an airtight closure when turned or pressed. This method of preservation helps maintain the food’s flavor, texture, and nutritional value, making Kerr jars popular for home canning and storing preserves. They are valued for their durability and ability to keep contents fresh without refrigeration.