Also called tetsu-tsubo (iron pot) and tsuke-tetsu-tsubo (dipped iron pot). Until the Meiji era (1868-1912), women used these pots to store iron plaster for staining their teeth. The pots were used to store the black liquid oxidized by soaking iron filings in sake or vinegar. Rarely, a toothpick stand is attached to the mouth of the jar. These are about the same size as Iga stonewares and have recently been discovered by potters and used as vases for single flowers and brush strokes.
A wide variety of pottery is produced in private kilns in various regions.
Tamba Tachikake Pottery calls them “Hagurome jar,” and Kagoshima people call them “Dentaguro Chaya” (tea house with black teeth).
