Frozen food refers to food items that have been preserved by lowering their temperature to below freezing. This process helps to maintain the food's nutritional value, flavor, and texture while extending its shelf life. Common examples include vegetables, fruits, meats, and prepared meals. The freezing process typically involves rapid freezing, which helps to prevent the formation of large ice crystals that can damage the food's structure. Frozen food is convenient for consumers, as it allows for easy storage and quick meal preparation, making it a popular choice in many households.