It’s a question often found on the minds of those spending hours cooking in their kitchens or grilling on summer nights: which side of the aluminum foil is best to use? Do you go for the shiny or the dull side? Is it possible we’ve been using aluminum foil incorrectly this entire time?
As it turns out, there is no apparent “correct” side of aluminum foil when used for cooking. According to the Huffington Post, both sides are equally effective at properly heating your food. So feel free to use either side!
Although there is no preferred side for aluminum foil, you may be wondering what the differences are between the two. According to the experts at Reynolds Kitchen, the difference between the two sides is due to the manufacturing process called milling, which occurs when heat and tension are applied to stretch and shape the foil. Two layers are pressed together and milled at the same time; otherwise, the foil would break.
“Where the foil is in contact with another layer, that’s the ‘dull’ side,” said Reynolds. “The ‘shiny’ side is the side milled without being in contact with another sheet of metal. The performance of the foil is the same, whichever side you use.”
However, be sure to pay close attention when using non-stick foil, as there is a difference between the two sides in this foil. Due to the non-stick coating that is only applied to one side, you’ll want to use the dull side. The non-stick foil will provide this information on the packaging should you forget.Related: 20 Mistakes to Avoid When Cooking Chicken