Analyzing the Design of Unusual Japanese Butter Tableware.
By Rain Noe
You probably noticed that funky knife in the photos of the Yoshikawa Case above. If you saw it out of context, you'd probably not know what it was:
The angle in the handle is a function of the slab form factor of European/Japanese butter. The little holes are to extrude separate noodles of butter, which (the Japanese find) are easier to spread.
https://www.core77.com/posts/102355/Analyzing-the-Design-of-Unusual-Japanese-Butter-Tableware
