Why Aluminum Foil Has a Shiny and a Dull Side

Yes! If you’re using non-stick foil, there is a difference between the two sides. The non-stick coating is only applied to one side, and that’s the side you should use. Typically, the dull side is the non-stick side, but you can confirm by checking the label on the packaging, which will clearly designate the “non-stick side.”

So, whether you’re baking, grilling, or wrapping leftovers, rest assured that the shiny and dull sides of regular aluminum foil will work just the same. The only exception is with non-stick foil—so pay attention to the label for best results!