 It may be done in a smoke-roaster, a closed wood-fired oven, or a barbecue pit, any smoker that can reach above , or in a conventional oven (one that a person does not mind having smoky all the time) by placing a pan filled with hardwood chips on the floor of the oven so that the chips can smolder and produce a smoke-bath.In North America, this smoking method is commonly referred to as "barbecuing," "pit baking," or "pit roasting".Hardwoods are made up mostly of three materials