The Jerusalem artichoke ( Helianthus tuberosus ), also called sunroot , sunchoke , or earth apple , is a species of sunflower native to central North America. It grows wild in eastern and western North America but is considered an introduced species. It is also cultivated widely across the temperate zone for its tuber, which is used as a root vegetable
Sunchokes can be served raw, roasted, fried, pureed into soups, or steamed. Similarly to celery root, sunchokes will oxidize when sliced, so it’s best to use them right away or store them in acidulated water (water with the juice of one lemon) if not using immediately.