Kuro Glazed Hirazukuri Chawan | Showa Studio | Seto-kuro Style | Summer Tea Bowl

In the tea ceremony (chadō, 茶道), the choice of chawan is never arbitrary. A tea master selects a bowl not only for beauty but for season: the wide, low form of a hirazukuri (平作り — flat-constructed) chawan belongs to summer, when a broad mouth allows the whisked matcha to cool and breathe, when the eye rests on a surface that feels open rather than enclosed, when the gesture of holding the bowl is less of a cup and more of a held landscape. This seasonal intelligence — kidori (季取り), reading the mood of the moment through objects — is one of the most sophisticated aspects of Japanese tea culture, and it is built into the proportions of this bowl.

The glaze tradition at work here is Seto-kuro (瀬戸黒) — Seto black — one of the Shichi-taikan (七大観), the seven great chawan forms revered in the Japanese tea ceremony canon alongside Raku, Hagi, and Karatsu. Seto-kuro emerged in the Momoyama period (桃山時代, late 16th century) under the direct influence of tea master Sen no Rikyū's aesthetic revolution: the move away from precious Chinese meiwan (名碗) and toward Japanese vessels that embodied wabi (侘び) — transience, plainness, the beauty of the unfinished. The characteristic technique, hikidashi-guro (引き出し黒 — drawn-out black), involves removing the piece from the kiln at peak temperature and allowing it to cool rapidly in air, arresting the iron glaze at its deepest, most mirror-like state. The result is a black that is not decorative but atmospheric — something that absorbs light rather than reflecting it, that changes reading between morning and candlelight.

This studio chawan works entirely within that lineage. The exterior carries kushime (櫛目 — comb-scored) decoration in the lower register: parallel lines drawn through the clay before firing, a technique associated with Seto and Tamba traditions that adds tactile life to the surface without ornamentation. The black iron glaze covers the body fully, with passages of warm brown-copper where the glaze runs thin at the shoulder — a feature called yohen (窯変 — kiln change), valued precisely because it cannot be planned. The wide, flat base (hira-kodai, 平高台) grounds the bowl with quiet authority. The unglazed rim reveals dark chocolate-brown iron-rich clay beneath. The base carries a small incised personal cipher of the potter. The interior is deeply glazed, clean, and smooth for whisking.

For the tea practitioner, this is a functional, seasonally correct summer chawan in a prestigious glaze lineage. For the collector drawn to the severe beauty of Japanese black-glaze ceramics, it offers the full Seto-kuro experience in a studio piece of honest craft. No box; no certificate — only the bowl, which is more than enough.

Excellent condition. No chips, cracks, or repairs. Glaze fully intact. Studio piece, Showa–Heisei period, c. 1970–2000