The fructose in an onion is contained within the flesh of the onion, not within its juices.  If you make a stock from onions where 100% of the onion flesh is removed, that stock will be “Fructose Friendly™”, in that it does not contain fructans or an unbalanced fructose/glucose load and, as such, will not produce an allergic reaction in a person who suffers from a Fructose Malabsorption Allergy.

Posted in: Fructose Friendly, Fructose Malabsorption Allergies