Jerusalem artichokes aka Sunchokes

[c-ray]

http://en.wikipedia.org/wiki/Jerusalem_artichoke

http://www.youtube.com/watch?v=kD1aHQ0ZtJ4

[c-ray]

the tubers can be made into syrup

https://www.brightearthfoods.com/catalog/superfoods/jerusalem-artichoke-syrup/



these guys have some good varieties

http://www.heritageharvestseed.com/jartichoke.html
http://www.mapplefarm.com