Respectfully , you miss the point it is not the honey we are concerned about when feeding bakers fondant it is the bees mortality. It would seem that high HMF feed across the winter could affect the larva, this may explain some of the colony over winter losses.
I'm aware of Research which has shown that Fondant can reduce a bees lifespan, and increased levels of HMF will shorten it even more.
I remember discussing this topic with a Senior beek a while back...
Sen.beek "don't heat up your sugar above 40c when making thick syrup or you'll kill your bees with HMF"
Me "what about fondant"
Sen.beek "what about it"
Me "isn't there two ways to make fondant, one by heating the other effectively non-heating"
Sen.beek "yes, what's your point"
Me "if heating sugar for syrup harms your bees, surely feeding fondant which is made by heating sugar will also harm your bees"
Sen.beek "ohh... hadn't thought about that..."
Me "what kind of fondant do you feed your bees, you buy from a Bakery Supplier..."
Sen.beek "dunno, but it's never done them any harm"
Me "have you ever taken a two hives and fed them different types of fondant etc., to see if it affects their health"
Sen.beek "no, ... go and ask the manufacturer"
Me "I did, they won't talk to me"
Sen.beek "mmm, I wish I had done the same"
Thanks for this info. Patrick, it is helpful.