Its a well-established question and one that weve been too afraid to ask our mothers: Should we use the shiny or the dull side of aluminum foil when we cook? And have we been doing it wrong this entire time?!Concerned cooks, you can breathe a sigh of relief: As it turns out, theres no “correct” side of aluminum foil to use when cooking so using it on either side is not one of the cooking mistakes that could ruin your food. According to the Huffington Post, theyre both equally effective at heating your foodso just choose whatever side you prefer.(Related: 5 Awesome Cookbooks to Cure the Kitchen Blues)If there’s no trick to it, then why, exactly, does aluminum foil have a shiny and a dull side in the first place? Experts at Reynolds Kitchen say that the difference between the two sides is due to amanufacturing process called milling, duringwhich heat and tension is applied to stretch and shape the foil. Two layers of foil are pressed together andmilledat the same time, because otherwise, it would break.Where the foil is in contact with another layer, thats the dull side, Reynolds explains. 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.But pay attention if you are using non-stick foil; in that case, there is a difference between the two sides. Since the non-stick coating is only applied to one side, youll want to use the dull side. Side note: There will be a label thatdesignates thenon-stick side in case you forget.However, aluminum foil could pose a serious risk to your healthso maybe you should stop cooking with it altogether.Next: 11 Cooking Mistakes That Can Make Your Food Toxic
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