Canned food refers to food that has been preserved in a sealed container, usually made of metal or glass. This process involves heating the food to kill bacteria and enzymes, which helps to extend its shelf life. Common examples of canned food include vegetables, fruits, soups, and meats. The convenience of canned food makes it popular for many households. It is easy to store, has a long shelf life, and can be quickly prepared for meals. Additionally, canned food often retains much of its nutritional value, making it a practical option for busy lifestyles or emergency supplies.