Agave nectar consists primarily of fructose and glucose. One source gives 47% fructose and 16% glucose;[9] another gives 56% fructose and 20% glucose.[10] These differences probably reflect variation from one vendor of agave nectar to another.[citation needed]

"white sugar" je sucrose (sacharoza)
glukoza je menej sladka ako sacharoza
fruktoza je viac sladka ako sacharoza
(a ako bonus sacharoza je disacharid zlozeny z glukozy a fruktozy)

logicky roznym pomerom glukoza/fruktoza ziskas roznu sladkost agave nectar
[ http://food.oregonstate.edu/learn/faq/faq_sugar53.html na konci su refs na sweetness ]

s tymi kcal to dost nechapem, kedze:
Carbohydrate consumed in food yields 3.87 calories of energy per gram for simple sugars [16] http://ndb.nal.usda.gov/ndb/foods/show/6202

inac imho cele picovina od zakladu riesit kcal, staci menej sladit a clovek si zvykne