Are you doing individual packets or a roast?
If you're doing a pouch dinner, put it all in the middle, fold sides up to meet in the middle and then fold down bending it every half inch... kind of like how you reseal a bag of coffee or a bag or goldfish crackers or pepperidge farm cookies. Roll/crimp the ends up.
For a big roast you want to crimp it to the sides of the pan and kind of "tent" it in the middle; fold a ridge down the center to give space for heat circulation.
You wrap food in foil and seal all the edges before cooking it.
It depends on what you're doing with it. Foil is better for baking & cooking with and to store some things in the frige. Saran wrap is good for storing things.
~Ceppwo The purpose of plastic wrap and aluminum foil is for food, it helps the food to stay good, without the plastic wrap and aluminum foil, it would be harder for us to keep it good, and with out it, the food would mold faster . . . so there's your answer:)
Clean, unused aluminum foil can be wrapped around the food directly, or it can be wrapped around a plastic or glass container that the food is in (depending on the consistency of the food).
Yes you can although it might not be as good as aluminum foil..
It's commonly called "tin foil" (originally it was made of tin) but it is actually aluminium foil, rolled to a thickness of (typically) less than 0.02 mm.
A Ziploc bag and wrap your food with aluminum foil :P and it works...
wrap it in foil or plastic
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Between Saran Wrap and foil, I would choose foil. But the best thing to use are freezer bags.
aluminium foil keeps food colder because it doesn't let air in.