My coleague Hiroshi Yamaguchi dipping wooden bowl into heated perilla oil. It is originally a western method of finishing bowls. Japanese lacquer is commonly used for traditional bowls, and polyurethane for modern ones.
同僚の山口が、熱した荏胡麻油に漬けて木の器を仕上げているところです。これは西洋のやり方のひとつです。