The Jerusalem artichoke (in season November-February) is pinkish and
looks like a large lump of root ginger. Strangely though, it isn’t a
member of the artichoke family and has nothing to do with Jerusalem.
It’s actually a kind of sunflower: girasole in Italian, which may have
been corrupted to Jerusalem. Cook in the same ways you would a potato,
or use raw in salads.
Jerusalem artichoke recipe
Parsnip and Jerusalem artichoke bake