If you travel through the hills of Mie Prefecture, you would never imagine that this landscape was once a lake bed. The Iga region—just over an hour from Kyoto—has produced some of Japan’s most distinctive wood-fired, unglazed ceramics for more than thirteen centuries.
Vessels known as Iga-yaki possess a uniquely porous character that retains and releases heat, a characteristic that has long made them prized as tea utensils, cooking pots, and flower vessels. Their quiet presence in the tearoom, the way an earthen pot draws out the depth of a dish, and the strong, grounding aura of an Iga flower container all arise from the particular clay of the region and its long tradition of intense, high-temperature firing.
Iga ware traces its origins to the 7th century when kilns in the mountains of present-day Mie Prefecture first produced utilitarian vessels for everyday storage and cooking. Their transformation began in the late 16th century, during the Momoyama period, when tea masters such as Sen no Rikyū and Furuta Oribe from neighbouring Kyoto recognized the quiet, weathered beauty of Iga’s clay and wood-fired surfaces. Under their influence, Iga ware rose from humble household pottery to treasured implements of the tea ceremony.
By the early 17th century, kilns were producing tea bowls, flower vases, water jars, and incense burners, firmly establishing the association of “Iga ware = tea utensils.” The aesthetic ideals cultivated in the tearoom—restraint, earthiness, and a sense of natural emergence—soon migrated into tableware.
The clay is drawn from ancient lakebed strata shared with the neighboring Shigaraki region. Rich in silica and resistant to thermal shock, Iga clay develops a naturally porous structure after firing due to fossilized microorganisms within the raw material. This porosity allows the clay to store heat and release it gradually, making it ideal for tea utensils and donabe cooking pots. Its refractory nature also enables it to withstand long, high-temperature firings without collapsing.
During firing, coarse grains of silica and feldspathic stone in the clay are exposed to the intensity of the flame, giving Iga ware its characteristic rugged texture and occasionally producing small bursts where embedded stones expand under the intensity of heat (ishihaze). This tactile roughness and juxtaposed calmness appealed to tea practitioners who valued the unrefined, grounded quality of such surfaces.
Firing brings the clay to life. Historically, potters in Iga used wood fired kilns, stoking them for dozens of hours or even several days. Iga ware is often said to withstand “seven firings,” a reflection of how its refractory clay can endure repeated cycles of heat. Some potters still fire their pieces multiple times, building density and hardness until the body is fully matured.
In the kiln, ash drifts through the chamber, melts, and forms the green, glassy biidoro that pools and flows across the surface. In hotter zones, the clay develops orange flashing, created where flame and semi-reducing conditions act directly on the body. Because these effects depend on kiln placement, the movement of fire, and subtle shifts in atmosphere, no two pieces emerge alike. Potters often describe these surfaces as keshiki—“landscapes”—records of ash, heat, and passing flame.
Over time, its role expanded from ceramics for tea ceremonies to tableware, and today it is especially valued by professional chefs in Japanese cuisine for its dynamic presence and it’s versatility on the table. Iga donabe—clay cooking pots—have become emblematic of this evolution, carrying the sensitivity of tea-ceremony into the rhythm of daily cooking and shared meals.
Artists based in Iga:
Hiroyumi Suzuki (see works / read story)
Doraku Gama (see works / read story)
Madoka Kashiwagi (see works / read the story)
A classic tea-ceremony flower vase from Iga, distinguished by the small lug-like protrusions on its shoulder common to Iga ware.
