Has anyone tried them? From what I've read they sound like famine food (alarm bells ring for me when flavour is seldom mentioned, no instances of words like 'tasty').
I'm always on the lookout for starchy alternatives to potatoes - mainly blight resistance but I simply don't like them boiled - or rather I don't like them boiled simply - mashed with butter & pepper they are fine.
Chinese Artichokes, tuberous pea, Yacon are good, Oca is useful and OK, Jerusalem Artichokes are two-trick ponies - excellent as soup and also when roasted to bags of pulp (but slightly windy even then).
Cheers.