Aluminium foil is a thin sheet made from aluminium metal, commonly used in kitchens and food packaging. It is lightweight, flexible, and has excellent barrier properties, making it effective for keeping food fresh and preventing moisture, light, and air from affecting the contents. In addition to food storage, aluminium foil is also used for cooking, baking, and grilling. It can withstand high temperatures, making it suitable for wrapping food items before placing them in the oven or on the grill. Its reflective surface can also help in directing heat, enhancing cooking efficiency.