Frozen food refers to food that has been preserved by lowering its temperature to below freezing. This process helps to maintain the food's nutritional value, flavor, and texture while extending its shelf life. Common types of frozen food include vegetables, fruits, meats, and prepared meals, making it a convenient option for quick cooking. The freezing process typically involves rapidly cooling the food to prevent the formation of large ice crystals, which can damage cell structure. Many people choose frozen food for its convenience, as it can be stored for long periods and is often ready to cook or heat, saving time in meal preparation.