The Six Ancient Kilns of Japan: Originating from the late Heian to the Kamakura periods, Tamba-Tachikui ware is fired in an ascending kiln at a maximum temperature of approximately 1300 degrees Celsius for 50 to 70 hours. The ash from the pine firewood falling onto the pottery combines with the glaze, creating kiln transformations and unique patterns and colors known as "hai kaburi" (ash-covered). Furthermore, the way the flames hit the pottery gives each piece a different expression, which is the greatest characteristic of Tamba-Tachikui ware. I believe that this item for sale also has a remarkable form and kiln-transformed scenery. This item is from a flower arrangement instructor.