The name “Persimmon Calyx” comes from how the colour and shape of the tea bowls resemble the calyx of persimmons.
A thin glaze is laid over the body that is made of a clay full of iron and mixed with sand. The dark brown colour of the glaze gives the bowl an earthy sheen. While the bowl is fairly thick, it is light to handle and has a feeling of somber refinement.
As for the shape, the mouth of the bowl has line, called a toikuchi, cut around it with a spatula . The hips of the bowl are stepped, and the bust of the bowl is wide. It’s tall foot is called a bachi-koudai and the inside of the foot is shaved in a circle. It is considered a type of Totoya tea bowl.