A terrific alternative to traditional ranges and hot plates, portable induction cookers use a magnetic field rather than a flame or electric heating elements to heat your cookware and cook or warm the food inside. With induction cookers, only the pan heats up, the rest of the cook top stays cool, so induction cooking does not produce any residual heat that is lost. All energy is transferred directly to the pan and food. The heating elements of an induction cooker, rather than producing heat, create an electromagnetic field. This magnetic field then reacts with anything magnetic, like induction-ready cookware, to create friction and heat. Heat is not generated until a magnetic pan is placed on the burner, and, once the pan is removed or the heating element is turned off, the heating stops, making induction ranges one of the safest pieces of cooking equipment available.