Aluminum Foil:
Wrapping food in aluminum foil protects it from both light and oxygen. Foil is also the best material for keeping moisture out of food, so it’s great for freezing food. But keep in mind that it is reactive, so it can’t be used with acidic foods like tomatoes and berries. If it’s fairly clean after one use, foil can also be re-used after washing (unlike plastic wrap).
It’s a good idea to use foil around plastic wrap for things that are going in the freezer, to provide a double layer of protection. You can use regular foil or heavier-weight foil that’s meant for freezing.
In the fridge, use foil for wrapping sandwiches, pizza, bread and muffins. It’s great to use on anything that might be re-heated in the oven.
You can use foil to line baking pans, in order to protect them from stuck-on food.
Aluminum foil CANNOT be used in the microwave