:See also: Barbecue. Grilling is a form of cooking that involves dry heat from above or below. Food to be grilled is cooked on a grill (an open wire grid with a heat source above or below), a grill pan (similar to a frying pan, but with raised ridges to mimic the wires of an open grill), or griddle (a flat plate heated from below) . Heat transfer to the food when using a grill is primarily via thermal radiation. Heat transfer when using a grill pan or griddle is by direct conduction. In the Unit… (More on Grilling)