A glass jar is a container made primarily from glass, designed to store food, liquids, or other items. These jars come in various shapes and sizes, often featuring a lid that can be sealed to preserve contents. Common uses include storing jams, pickles, and dry goods, as well as for crafting and decoration. Glass jars are popular for their durability and non-reactive nature, which means they do not alter the taste of food. They are also recyclable, making them an environmentally friendly option. Many people use mason jars for home canning, a method of preserving food for long-term storage.