When cooking with Xtrema Skillets on your glass top, gas or electric coil stove, please start by using a low heat setting then increase to a low-medium heat. Do Not Go above Medium. It may take a few extra minutes for the Xtrema cookware surface to become fully heated but once it reaches the proper temperature, reduce the heat to a lower setting because the Xtrema cookware will retain heat for a longer period of time.  Once the cooking surface is heated on a low setting for 2 minutes then spray the entire cooking surface of your skillet with your favorite oil before turning the burner temperature to a low medium setting.  It will take a little practice and patience but, in a week, or two you will become an expert at cooking with our Xtrema ceramic cookware.