Bizen Yaki, the oldest pottery among Japan's Six Ancient Kilns, originated in Bizen City, Okayama Prefecture, dating back to the Heian period. Each piece is shaped from high-quality clay and fired directly at extremely high temperatures for seven to ten days, without painting or glazing. This results in exceptionally hard stoneware that highlights the clay's natural character. During the Momoyama period, its unpretentious beauty and rustic simplicity gained immense popularity among tea masters, aligning perfectly with the wabi-sabi aesthetic. Bizen Yaki is distinct for its natural patterns, known as keshiki (kiln scenery), such as goma (sesame) and hidasuki (scarlet cords), formed purely by precise arrangement and pine firewood stoking. A significant revival in the Showa era led to its designation as a National Traditional Craft in 1982.