Rondon-yaki cake making machine. Look like they're essentially mini sponge cakes. Kyoto, Japan. 2:27 video:
https://www.youtube.com/watch?v=CILJQ35sW3A
Previously:
https://www.homemadetools.net/forum/...573#post136187
https://www.homemadetools.net/forum/...5598#post82172
https://www.homemadetools.net/forum/...9599#post89651
https://www.homemadetools.net/forum/...366#post104084
https://www.homemadetools.net/forum/...478#post110676
https://www.homemadetools.net/forum/...815#post129196
https://www.homemadetools.net/forum/...007#post100484
