In ancient times, every time when a tea ceremony or a tea party was convened, Chashaku were freshly made without being stored, so there is only a handful of preserved Chashaku from the ancient times.
古くは茶事・茶会のたびに作ることがなされており,そのため保存しておく習慣がなく、古い時代のものはあまり残されてはいない。