... utensil is properly pre-heated, you are ready to cook.TIP: Avoid cooking very cold food in the pan, as ... shock can occur causing the metal to warp or crack).TIP: If you are having trouble removing stuck-on food, ... of oil to the utensil while it is still warm.TIP: Do not let your cast iron air dry, as ... from collecting inside the utensil, which can cause rust.TIP: The oven is a great place to store your ...