Jerusalem Artichoke (Sunchoke)
Helianthus tuberosus

Illustration: Jerusalem artichoke (Helianthus tuberosus) with knobby tubers
Identification: Tall sunflower (6–10 ft) with knobby, ginger-like tubers underground. Rough hairy stems and leaves; small yellow sunflower heads in fall.
Dangerous look-alikes: No toxic look-alike with the same tuber + sunflower combination.
Edible parts: Knobby tubers.
Season and habitat: Fall after frost through spring. Disturbed ground, field edges, stream banks.
Preparation: Scrub and roast, boil, or eat raw in salads — crisp and nutty. Note: inulin causes legendary gas in the uninitiated; start with small portions. Also called sunchoke; not from Jerusalem and not an artichoke.