Yacón is a species of perennial daisy traditionally grown in the northern and central Andes from Colombia to northern Argentina for its crisp, sweet-tasting, tuberous roots. It has a slightly sweet, resinous, and floral (similar to violet) undertones to its flavour, probably due to the presence of inulin, which produces the sweet taste. Another name for yacón is Peruvian ground apple or, in Ecuador, Jicama. The plant produces a perennial rhizome, to which are attached the edible, succulent storage roots or tubers, the principal economic product of the plant. The edible storage tubers are large and typically weigh from a few hundred grams to over a kilo. The tuber is composed mostly of water and fructo-oligosaccharide, an indigestible polysaccharide made of fructose. Fructo-oligosaccharides taste sweet, but pass through the human digestive tract unmetabolised, hence have very little caloric value, but have a beneficial prebiotic effect.