Note: Make sure you allow the cast iron to cool to a comfortable handling temperature before attempting to wash it.
Immediately dry your ironware after rinsing.
Heat the pan on the cooktop or under the broiler until the oil begins to smoke, then remove the pan from the heat and allow to cool once more.
Note: It is best to use a high-smoke-point oil. Cottonseed, flax, soy, and grape seed oil work very well. Applying a layer of seasoning after each use results in a very robust, and highly functional piece of cookware.