How do I tell Bizen from Arita?

They sit at opposite ends. Bizen is unglazed stoneware: dense, earthy, brown shading to red, scorched and ashy with no two pots alike, and it looks pulled straight from a fire. Arita is porcelain: white, hard, faintly translucent, and painted, in cobalt blue-and-white or brilliant overglaze enamels. If it is bare brown clay it is Bizen; if it is white and painted it is Arita.

What is the difference between Bizen and Shigaraki?

Both are unglazed Six Ancient Kiln stoneware and are easy to confuse. Bizen, from Okayama, is dense and earthy, brown to red from iron-rich paddy clay. Shigaraki, from Shiga, tends to be lighter and grittier: its coarse clay is studded with white feldspar and quartz that burst to the surface, and long firing often leaves green ash drips alongside warm orange "fire color."

Which Japanese pottery is most prized for the tea ceremony?

Hagi ware, from Yamaguchi, is the tea favorite. An old ranking of tea bowls runs "Raku first, Hagi second, Karatsu third." Hagi is soft, pale, and finely crazed over a porous body, so tea seeps in and slowly changes the bowl's color over years of use, a transformation practitioners celebrate as Hagi no nanabake, the "seven transformations." Bizen also became a tea favorite in the Momoyama period.

Japanese Pottery by Region: Bizen, Hagi, Mashiko, Arita, Shigaraki & Kutani

Q: Are Arita ware and Imari ware the same thing?

Historically, yes. Imari ware is the same Arita porcelain, named for the nearby port of Imari it shipped from, including huge export volumes to Europe across the late 1600s and 1700s. Refined white Japanese porcelain with blue or polychrome painting almost always traces home to Arita, whether a label calls it Arita or Imari.

Q: What is Kutani ware known for?

Kutani, from Ishikawa, is painted porcelain known for gosai, the "five colors" — green, blue, yellow, purple, and red — laid on thick and saturated, often blanketing the surface with landscapes, birds, and dense pattern. Where Arita can be cool and restrained, classic Kutani is opulent and maximalist. The gold-brocade kinrande style most people picture belongs to the 19th-century revival.

"Japanese pottery" is not one thing. A wood-fired Bizen vase the color of rusted iron and a hand-painted Arita plate in cobalt blue come from the same country and share almost nothing else — different clay, different temperature, different centuries, different idea of what a beautiful surface even is. The fastest way to make sense of it is by region, because in Japan a ceramic style is usually named for the town or province where its clay and kilns sit. Here are six you are likely to meet, and how to tell them apart.

Bizen (Okayama) — the unglazed survivor

Bizen ware (備前焼) uses no glaze at all. Its color and markings come entirely from the kiln: ash settling on the surface, flame, and the way each piece is packed against its neighbors. The clay, called hiyose, is dug from the subsoil of old rice paddies around the town of Imbe — sticky, fine, and heavy with iron — and the work is fired for ten to fourteen days in a wood kiln. The result is dense and earthy, brown shading to red, scorched and ashy in patches no two pots share.

Bizen is one of the Six Ancient Kilns (六古窯), the handful of kiln towns whose production runs unbroken back to medieval Japan, and it became a tea-ceremony favorite in the Momoyama period (late 1500s) for exactly that rough, unforced look. If you see Japanese stoneware with no glaze that looks pulled straight from a fire, it is probably Bizen — or its cousin Shigaraki.

Shigaraki (Shiga) — feldspar specks and natural ash

Shigaraki ware (信楽焼), also a Six Ancient Kiln, comes from the hills southeast of Kyoto. Its clay is famously coarse, studded with white feldspar and quartz grains that burst to the surface in the heat for a speckled, gritty skin. Long wood-firing lays down a natural ash glaze ranging from warm orange — hi-iro, "fire color" — to a glassy green where ash pooled and ran.

Abroad, Shigaraki is best known for one thing: the comic, big-bellied tanuki (raccoon-dog) figures that have stood outside restaurants and homes since the 1930s. But the same kilns made serious tea jars and water containers long before that. Shigaraki and Bizen are easy to confuse; Shigaraki tends to be lighter and grittier, often with those green ash drips.

Mashiko (Tochigi) — folk pottery and Hamada Shōji

Mashiko ware (益子焼) is the youngster here, dating only to 1853, when a potter found the local clay ideal for ceramics. It is thick, sturdy, everyday stoneware — bowls, plates, teapots. It went global through the 20th-century mingei (folk-craft) movement and its central figure, Hamada Shōji, who set up a kiln in Mashiko in 1930, was later named a Living National Treasure, and turned the town into a pilgrimage site for studio potters. Look for generous forms in earthy browns and off-whites, often under the iron-rich kaki (persimmon) glaze, with simple brushed or trailed decoration. It feels handmade and unfussy, which is the whole point.

Hagi (Yamaguchi) — the tea bowl that changes

Hagi ware (萩焼) began around 1600, made by Korean potters brought to Japan after Toyotomi Hideyoshi's invasions of Korea and set to work for the Mōri lords. It is soft, pale, and quietly textured — pinkish-white to loquat-orange glazes over a low-fired, porous body. Tea practitioners prize it: an old ranking of tea bowls runs "Raku first, Hagi second, Karatsu third."

Its signature is change. The body is porous and the glaze is finely crazed — a web of fine cracks called kannyū — so over years of use tea seeps in and slowly shifts the bowl's color and character. Practitioners celebrate this as Hagi no nanabake, the "seven transformations" of Hagi (poetic rather than a literal count). A bowl you have used for a decade is, visibly, not the bowl you bought.

Arita / Imari (Saga) — Japan's first porcelain

Everything above is stoneware. Arita ware (有田焼) is porcelain — white, hard, faintly translucent, painted. It is generally counted as the first porcelain made in Japan, beginning in the early 1600s in the Saga town of Arita after kaolin was found at the nearby Izumiyama quarry, traditionally dated to 1616. Credit goes by custom to a Korean potter known in Japan as Ri Sampei (Yi Sam-pyeong), though many historians now treat that origin story as a simplification. Early Arita is blue-and-white (sometsuke): cobalt painting under a clear glaze. By the mid-1600s came the brilliant overglaze enamels — reds, golds, and greens — of the Kakiemon and Imari styles.

You will also hear "Imari ware." Historically it is the same Arita porcelain, named for the nearby port of Imari it shipped from, including enormous export volumes to Europe across the late 1600s and 1700s. Refined white Japanese porcelain with blue or polychrome painting almost always traces home to Arita.

Kutani (Ishikawa) — the bold five colors

Kutani ware (九谷焼), from the old Kaga domain in today's Ishikawa Prefecture, is also painted porcelain but with a wholly different palette. Its hallmark is gosai, the "five colors" — green, blue, yellow, purple, and red — laid on thick and saturated, often blanketing the surface with landscapes, birds, and dense pattern. Where Arita can be cool and restrained, classic Kutani is opulent and maximalist. The first wares (Ko-Kutani) appeared around 1655 and production later lapsed; the gold-brocade kinrande style most people picture belongs to the 19th-century revival.

A cheat sheet

No glaze, brown, fired-looking: Bizen (or grittier, green-flecked Shigaraki)
Thick, earthy, everyday stoneware: Mashiko
Soft, pale, crazed, beloved in tea: Hagi
White porcelain, blue-and-white or refined enamel: Arita / Imari
White porcelain, bold five-color painting: Kutani

Names get layered — a single piece might be Arita porcelain in the Kakiemon style — but region, clay, and the basic split between glazed stoneware and painted porcelain will orient you almost every time.