@mihona
I'm French and I didn't know this word 😐
But yes, apparently a "bluterie" is a location where the flour is "bluter" (sifted with a bag).
The only violence that I can think of is that it comes from a German word...
It's hard to write about other culture. Many mangaka choose to write about japanese people because it's easier.
Were you never shocked when you read story with people of your own country?
("For a normal French, the first thing that they would do when moving into a new home was build a wine...