Years and years ago (the early 70s) my parents used to vacation at a place outside West Townsend, Vermont, called (I think) Wyndham Hill Farm.
The owners grew all their own vegetables on-site and a big part of WHF's attractiveness were the gourmet meals they prepared with them.
Many afternoon lunches featured sandwiches made with what we were told were Japanese cucumbers--these were dark purple on the outside, purplish-green on the inside, had very wrinkled skins (which were eaten along with the rest of the cuke), and had a very crisp, almost nutlike taste.
Does anybody have any idea what these might have been? I've looked at literally hundreds of seed catalogs over the years and nothing called a "japanese cucumber" per se has even looked remotely similar to what I remember.
Before I die, I would love to eat another one of those delicious sandwiches!
viv