According to the research in 2005 by 15th Kichizaemon and others, a part of this work was first applied with Ryokuyu (green glaze) or covered with Hakudei (white clay) for Keshogake (cover the pottery with white clay to show better coloring of glaze), then Nisaiyu (two colored glaze) or Sansaiyu (three colored glaze) was applied.
2005年の十五代・吉左衛門らの調査の結果、一部に緑釉や化粧掛けの白泥が施された上に二彩釉や三彩釉がかけられた。