Preheat baking sheets for additonal crispness. Slamming chilly dough on hot steel leap-starts off browning on cookies or fries.

https://pipewiki.org/wiki/index.php/Cooking_Techniques_Explained%E2%80%94Steaming,_Searing,_%26_Saut%C3%A9ing_one_zero_one!

Preheat baking sheets for additional crispness. Slamming cold dough on sizzling metal start-starts browning on cookies or fries.