Jerusalem artichokes contain inulin, a type of carbohydrate of the fructans family. Inulin has excellent nutritional and functional characteristics that promote the growth of intestinal bacteria, keeping your gut healthy and alleviating constipation. Jerusalem artichokes are also a source of iron. The taste is indeed similar to an artichoke.
In the Quebec city region you may find jerusalem artichokes at Jardin Mobile, in Sherbrooke at Le Végétarien and in Montreal at the Atwater and Jean Talon markets.