As part of its tourism campaign, Seibu Group Railways has been promoting a new local delight in Chichibu (in Saitama, about 90mins by car from Tokyo)
Its waraji katsudon.
The ad says
Chichibu’s waraji katsudon
Waraji is the flat japanese slippers made out of grass. [guess the flat fried katsu looks like it hence the name?]
Its immersed in this sweet slightly sour sauce as well, reminiscent of the sauce for katsuaage.
I really liked it xD~