It's a german word, they are japanese, how would they know. They only knew after the Decon told them that it was just a CutletHow do they not know what a schnitzel is?
I think considering he's a noble he never considered eating anything with his hands, and if you only eat things with silverware then sandwiches probably isn't something considered.I guess Earl of Sandwich made it only popular. But the idea of placing something between or on top of a slice of bread was known much earlier. At least for the poor people.
And using pork for Schnitzel is just an imitation, or let's say a cheaper version. The Viennese Schnitzel must be made of veal, not other meat.