According to Wikipedia, 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. Their texture and flavor are very similar to jicama, mainly differing in that yacón has a slightly sweeter flavor. Yacón (pronounced ya-CONE) syrup comes from the yacón plant. Most of yacón’s benefits are suspected to be from the high amounts of nutrients and prebiotics like inulin and fructooligosaccharides (FOS). It does contain about 35% fructose which would normally be problematic. But with the FOS, it is suspected that body does not see it the same as fructose.
All of this is to say that yacón syrup may be a great alternative to regular sugars which are known to affect health adversely in so many people. Ideally, you would monitor the affects of yacón syrup on your blood sugar and compare it to the affects of other natural sweetness like agave, honey, and maple syrups.