Roughage

http://books.google.com/books?id=67UvAAAAMAAJ&printsec=frontcover&source=gbs_atb#v=onepage&q&f=false

A shop in Herne Bay, Kent, advertised this specialty through the whole of the summer 1906 holiday season.

Reader John Day sent this photo to The Strand. “Herne Bay trippers are evidently careless of what they eat.”