Cast iron cookware is less smoother than the Non-Stick cookware.. Iron deficiency is fairly common worldwide especially among women so cooking food in a cast iron skillet can increase iron content by as much as 20%. Hand wash even before first use and dry immediately; rub with a light coat of vegetable oil after every wash. Allow cast iron skillet to cool completely before washing them in hot soapy water with a sponge using regular dishwashing liquid soap; it is not dishwasher safe. Its superior heat retention will keep your mouth watering food warm for a long time