BORHILL Jerusalem artichoke syrup is positioned as a sugar-free syrup made from maapirn/topinambur. Its key component is inulin, a fructan-type soluble fibre found naturally in Jerusalem artichoke. Inulin gives the syrup a mild sweet taste, but it is different from ordinary sugar because it is not broken down and absorbed as glucose in the small intestine.
Honey, maple syrup and conventional sweet syrups mainly provide sugars that are digested and absorbed more directly. In contrast, inulin passes further through the digestive tract and is fermented by gut bacteria in the colon. For this reason, the source describes this syrup as having a low glycaemic impact compared with ordinary sugar or honey.
The syrup is not the same as a calorie-free sweetener and it is not a medicine. The source also notes that Jerusalem artichoke syrup naturally contains small amounts of fructose alongside inulin, as well as pectin and trace minerals such as potassium, iron and silicon. If you are choosing it because you need strict carbohydrate or fructose control, check whether this type of product fits your personal dietary guidance.