Seasoning cast iron cookware is the most important maintenance element. If taken care of, a cast iron pan, skillet or pot can last for more than a generation, however, if not properly seasoned, your cast iron will begin to rust, but even rusted cast iron can be rejuvenated with a thorough cleaning and seasoning. Seasoning a pan is relatively simple and can be done in an afternoon. It is best to take care of seasoning as soon as the pan or pot is purchased to ensure that it is not cooked on before the process is finished.
To season a cast iron pan, coat the interior with a liberal amount of cooking oil. Once the oil is in the pan, swish the pan around so the oil coats not only the bottom, but the sides of the pan. Once coated, put the pan in an oven that has been preheated to 350°F and let it bake in the oven for about an hour. Let the pan cool completely and then wipe it down with a towel to remove excess oil.