Grill the corn on a hot grill or cast iron griddle pan until slightly charred. (cookingchanneltv.com)
Steam - assist in the form of water poured on cast iron griddle pre-heated in oven when bread was put into oven. (ruhlman.com)
When you're ready to make the tortillas, heat a nonstick or cast iron griddle until hot (if using an electric griddle with a temperature gauge, heat it to 375 °F). (glutenfreeonashoestring.com)