Jerusalem Artichoke
It is one of the finest source dietary fibers, especially high in oligo-fructose inulin, which is a soluble non-starch polysaccharide. Inulin should not be confused for insulin, which is a hormone. The root flesh provides 1.6 mg or 4% of fiber. Inulin is a zero calorie, saccharine, and inert carbohydrate, which does not metabolize inside the human body, and thereby; make this tuber an ideal sweetener for diabetics and dieters.