It is a Yasutaka Ohashi's Hand-Hammered Copper Kettle. Mr. Ohashi makes it from a copper plate by hammering. He used to be a craftsman in Gyokusendo, the world famous traditional manufacturer in Niigata, Japan, and became independent to pursue the hand-hammered copperware.
https://www.shokunin.com/en/ohashi/yuwakasi.html

You can watch videos, too:
https://www.youtube.com/embed/NWS8jU1zINw
https://www.youtube.com/embed/PZvIdalBgh4