Koju Tenmoku Sake Cup

A glaze in constant motion, shifting with infinite possibilities. The Koju Tenmoku Sake Cup is a striking display of tenmoku’s untamed beauty—patterns unfurl like bursts of energy, pooling into jewel-like formations that seem to glow from within. Named by master ceramicist Dobuchi Yoshiaki as an original creation, Koju combines ko (tiger) and ju (jewel) to reflect both the wild, unpredictable nature of the glaze and the deep, radiant orbs that emerge in the firing, reminiscent of a tiger’s piercing gaze or the shimmer of a precious stone.

Embracing the unpredictability of tenmoku, Dobuchi’s dedicated research into this classical glaze has led to original and unexpected discoveries. By layering the glaze two or three times, he allows complex reactions to unfold within the heat of the kiln, creating intricate, organic patterns. No two pieces are ever alike, as the glaze transforms unpredictably—streaks of ivory streak across rich amber depths, punctuated by gleaming, glassy pools.

The history of tenmoku dates back over 800 years to a single kiln during the Southern Song dynasty in China, where it was revered for its rich, reflective depth. But tenmoku is a glaze of transformation—one that emerges suddenly, never fully within the potter’s control. Even after centuries of study, its most breathtaking variations appear unexpectedly, shaped by the delicate balance of heat, oxygen, and mineral reactions in the kiln.

A sake cup both fierce and mesmerizing, Koju captures a fleeting moment of alchemy, where fire, minerals, and chance converge in perfect harmony.

Dobuchi Yoshiaki

Dobuchi Yoshiaki, the fourth-generation head of Kyoto’s Touan, specializes in tenmoku: an ancient technique long prized in ceramics for its depth and complexity. Tenmoku has inspired generations of potters with its reflective finish, striking black glaze, and intricate patterns. Dobuchi’s work reflects both technical mastery and artistic vision, each piece grounded in the past while building a fresh creative future.

Kyo ware and Kiyomizu ware, collectively known as Kyo-yaki or Kiyomizu-yaki, are esteemed crafts from Kyoto. Unlike other pottery styles, they integrate various techniques from across Japan, resulting in unique, handmade pieces. Each item is crafted meticulously, from shaping on the pottery wheel to intricate painting, showcasing exceptional modeling skills and delicate designs.

With a rich history intertwined with traditional Japanese culture, Kyo ware and Kiyomizu ware are celebrated for their refined artistry and elegance. Known for their vibrant and detailed paintings, they were officially recognized as a traditional craft by the Japanese government in 1977. Today, these ceramics are prized for their high artistic quality, embodying both historical craftsmanship and aesthetic sophistication.