Sea salt chocolate chip cookie on parchment paper
Why You Should Always Use Parchment Paper's Shiny Side
Parchment paper boasts a smooth coated surface that prevents food from sticking, but this coating is usually applied to one side of the paper, resulting in a shiny and dull side.
The coating also provides a barrier against moisture and grease. As a result, when you place the shiny side up, you maximize the benefits of this nonstick surface.
The shiny side prevents residue and baked-on bits from adhering to your baking sheet, making cleanup a breeze. All you’ll have to do to clean is peel off the parchment paper.
To check which side has the coating, hold it up to the light to see if it shimmers and is slightly translucent. If you can't tell, feel which side is smoother with your hands.