Paulownia wood board, aluminum foil, and mizuhoshi are used. Washi paper is not used. After priming the paulownia wood panel, aluminum foil was applied directly to the panel. The still life is heaped up. The back is coated with water-based urethane varnish. Nihonga" is based on a style of painting that has existed for more than 1,000 years, and the materials used are old, traditional, and historically cultivated. The technique involves painting on Japanese paper, silk, wood, etc., using natural paints such as sumi ink, iwa-enogu (mineral pigments), gofun (gofun), etc., and glue (nikawawa) as an adhesive. Gold and other metal materials (gold leaf, etc.) are also used. Iwa-enogu, made from ores, is a beautiful, sand-like powder. Mizuhigure, made from clay, is a fine, stretchy, fine-particle paint. Artificial versions of iwa-enogu and mizuhoshi egur are also made, and are available in a wide variety of colors. Goko, made from shells, is a white pigment with fine particles.
