<human>:  What is the best way to clean a cast iron pan?
<bot>: The best way to clean a cast iron pan is to rinse it with hot water, scrub it with a stiff brush or steel wool pad, and then dry it completely with a cloth. Then, heat the pan for two to three minutes over medium heat and rub it with a thin layer of cooking oil. Finally, use a paper towel to wipe away any excess oil.