CMC: Fondant Stabilizer. Have a problem with fondant roses & bows wilting over time? CMC is the most widely used additive for rolled fondant. Used to give fondant gumpaste like qualities to be made into bows, flowers, figures, or decorative accents in order for the fondant to dry faster & harder. Simply add 1-2 tbsp per lb of fondant & knead. Speed up drying time to as fast as 2-3 hours. View CMC here: http://www.caljavaonline.com/tools1-cmc-lg.htm