The rectangular shape of the pan facilitates a constant diameter over the length of the omelette, giving the omelette its bar-like shape once rolled. Most professional pans are made of heavy
copper coated or lined with
tin, with these materials being preferred for their heat conduction. A cheaper, nonstick variety is a common alternative to the copper pan. There are three types of :
Kantō-type,
Kansai-type, and
Nagoya-type. Kantō-type pans are square, Kansai-type pans are tall-and-thin rectangles, and Nagoya-type pans are short-and-wide rectangles. In the Kantō region, is typically used with a thick wooden lid that is used to help flip the omelette. To achieve this, the pan is wiped with a paper towel or piece of cloth daubed with oil. Some recipes caution that the egg should not be allowed to brown at all, == Tamagoyaki ==