Preserved vegetables are vegetables that have been treated to extend their shelf life and maintain their flavor and nutritional value. Common methods of preservation include canning, pickling, and freezing. These techniques help prevent spoilage and allow for the enjoyment of seasonal produce throughout the year. Many cultures around the world have traditional recipes for preserved vegetables, such as kimchi in Korea and sauerkraut in Germany. These preserved foods not only add variety to meals but also provide essential nutrients, making them a valuable addition to a balanced diet.