Production and sales of "Asakano-yaki" in Koriyama, Fukushima

When shaken, it makes a faint lovely bell-like sound.
Normally, the tumbler makes no sound, but this tumbler has a
clay ball inserted in the gap of the double structure at the
time of manufacture.

At first, you'll be amazed at how tumblers make noise. And the
cuteness of the sound will surely calm your heart. Each time you tilt the cup, the ball rolls and makes a faint sound.

This pottery product is made of double structure. The idea of making it a double structure was devised about 120 years ago.
It is made by making holes so that it will not explode during firing, but it may get wet or dirty. To prevent these
problems, we developed a completely sealed and fired technology 18 years ago.

The double-structured cup can be held in your hand even with a hot drink. If it is cold, there will be less condensation. In addition, although it is a numerical result, in our experiment, the effect of heat retention and cold retention was improved by about 30%.

movie:
https://www.instagram.com/p/DFsG8PlSpJK/