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Jerusalem artichoke

 Tubers of Helianthus tuberosus. The origin of the name Jerusalem is from the Italian girasole (sunflower). Introduced to Europe from Canada by Samuel de Champlain in 1616, and originally called Canadian artichoke. Much of the carbohydrate is the non-starch polysaccharide inulin.

Composition/100 g: (edible portion 69%) water 78 g, 318kJ (76 kcal), protein 2 g, fat 0 g, carbohydrate 17.4 g (9.6 g sugars), fibre 1.6 g, ash 2.5g, Ca 14mg, Fe 3.4mg, Mg 17mg, P 78mg, K 429mg, Na 4mg, Zn 0.1mg, Cu 0.1mg, Mn 0.1mg, Se 0.7μg, vitamin A 1μg RE (12μg carotenoids), E 0.2mg, K 0.1mg, B1 0.2mg, B2 0.06mg, niacin 1.3mg, B6 0.08mg, folate 13μg, pantothenate 0.4mg, C 4mg. A 120g serving is a source of P, vitamin B1, a good source of Fe.