How do I prevent food from sticking to the surface of aluminum foil facing when cooking?

To prevent food from sticking to the surface of aluminum foil when cooking, you can lightly coat the foil with a thin layer of cooking oil or non-stick spray before placing the food on it. This creates a barrier between the food and the foil. Additionally, ensure the foil is not torn or damaged, as this can cause food to stick. Using a heavier gauge foil can also help reduce sticking. Finally, avoid overcrowding the food on the foil, as this can cause it to stick due to uneven cooking and steam build-up.