It is an easy way to use portable induction cooktop. Get the right type of pans. Induction cooktops require a pan with some iron in the bottom, Test out your old pans if you don’t want to buy new ones. To test your pans for iron, put a magnet on the bottom of the pan, Turn on the induction cooktop, Place your pot onto the induction cooktop, Time your food appropriately. This is the use of portable induction cooktop.n