Yard long beans.
Thai food: yard long beans.
I was at the food fair a couple of days ago, and found this wholesaler of exotics. They sold some of their produce to the general public, among them yard-long beans. These were in among some herbs, and they were all priced at €1.50 a bag - including half a kg (a pound) of these, so of course I bought some. (Actually, I bought one each of all their 1.5 € bags. Did you know that the oh so exotic "Horapa leaf" is just plain Thai basil? Me neither.) (They didn't sell their exotic fruit at all; I'll have to buy one of each one of these days, downtown, from one or the other large deli.)
I boiled them up just like I do green beans in general: chop up some onions, add some oil and salt, cut the beans to bite-sized bits, add water, and boil until soft. Serve with a dash of butter and lots'n'lots of chopped-up parsley. Yum! They taste quite like normal green beans, but they have a great advantage: they don't have any strings at all.
I don't expect I'll find them again, but if I do, and they're halfway affordable, I'll buy more.