Aside from the obvious, doing a 50/50 mix with gum paste, what are some add ins to get fondant to dry hard? I have read of one in particular, but of course, I can't remember it...gum tex? not glucose...hmm..
Gum tex, tylose, cmc powder, gum traganth.... maybe more. I use about 1 tsp per pound of fondant/gumpaste. Of course it's pretty humid here.