Aluminum foil is a thin sheet made from aluminum metal, commonly used in kitchens and food preparation. It is lightweight, flexible, and has a shiny surface. People often use it to wrap food items, helping to keep them fresh and prevent spoilage. In addition to food storage, aluminum foil is also useful for cooking. It can be used to line baking trays, cover dishes, or create packets for grilling. Its ability to withstand high temperatures makes it a popular choice for various cooking methods, including baking and roasting.