Slumbering Sake Cup Fireworks Color Change Copper Tin plating Japan

Tin is characterized by its high ionic effect, which purifies water and makes drinks mellow and tasty. Tin is also compatible with copper, which is a good heat conductor, and tin has been used in copper products for a long time. （Tinned copper)

Copper is a good thermal conductor, and you can feel the coolness of sake with your fingers and lips from the moment you pour it, and you can also enjoy the taste of sake by touch.

This sake cup is made of copper with good thermal conductivity and tin with high ionic effect, with illustrations to enjoy the seasons. The illustration is colored when the surface temperature of the sake cup falls below 16°C. The entire surface is cooled from the moment it is poured, and the illustration is colored when the surface temperature falls below 16°C.