How were tea bowls judged during a Japanese tea ceremony?

In the Japanese tea ceremony, tea bowls were not merely functional vessels but were central objects of aesthetic appreciation. After the tea was consumed, guests were traditionally invited to inquire about and discuss the merits of the implements used, including the tea bowls themselves.1

The judgment of these bowls was deeply rooted in the philosophy of wabi-sabi, which emphasizes beauty in simplicity, imperfection, and the appreciation of the old and weathered. Under the influence of tea masters like Sen Rikyū, the aesthetic shifted away from ornate or highly refined pieces toward simple, rustic objects.123

Key factors in judging these bowls included:

• Aesthetic Merit: Participants evaluated the bowl's adherence to wabi (simplicity and absence of ornament) and sabi (an appreciation for the aged).12
• Individuality: For raku ware, which was hand-molded rather than wheel-thrown, the unique expression of the maker’s hand was highly valued.4
• History and Resilience: Techniques like kintsugi—repairing cracks with gold or silver—transformed damage into a visual record of the object's history, adding emotional and aesthetic value.2