Super thin baking sheets will cause the cookie bottoms to cook faster, sometimes resulting in burnt bottoms.Yuck!Insulated baking sheets allow air movement and will help to produce puffier cookies.

• 薄的烤盘会使饼乾底部烤得较快甚至于有焦底的现象，而绝缘材质的烤盘烤出来的饼乾则较膨松。