A vessel used in the tea ceremony for charcoal preparation in the furnace and wind furnace. In the furnace, it is filled with moist ashes, and in the wind furnace with light ashes. They are also called “horoku” (written as “gunrank” or “gunroku”) or “ash horoku. The Senke family’s customary practice is to use unglazed furnaces and glazed ash containers for the wind furnace. In the upper section of guns in the “Fumai Kozo Chocho,” we see Chojiro (spring, three small pieces of gold), Nonkou (fifty pieces of gold), Bizen firestick (fifty pieces of gold), Namban bottle cap ash heaping (ten pieces of gold), and others.
