Jerusalem artichoke, botanically-named Helianthus tuberosus , is the tuber of a variety of perennial flower in the aster family. The flowers look like small yellow sunflowers. Also marketed as sunchokes , these gnarly little tubers look a lot like ginger root. Perhaps the most important root cash crop to originate in North America, the tubers have a potato-like texture often recommended as a potato substitute for diabetics.
Sir Walter Raleigh found Native Americans cultivating sunroots in what is now Virginia in 1585. When the sunchoke reached Europe in the early 1600s, thanks to Samuel de Champlain, it was known as the “Canada” or “French” potato. The French, who call it topinambour (incidentally also a term used for an uncouth, uneducated person), are credited with improving the tubers and cultivating sunchokes on a larger scale.
For many years, the Jerusalem artichoke was shunned due to an old wives’ tale linking it to leprosy simply because of the similarity of the tubers to the shape of deformed fingers caused by the disease. During World War II, sunchokes and rutabagas were the most prevalent vegetables, giving them the reputation as a poor man’s vegetable.
Over 200 varieties are now available. They are used not only in many commercial products as a fructose source, but also to make alcohol. The sunchoke has always been cultivated much more extensively in Europe than in America.