Maegan - from Dallas, TX
The reason you should not put fondant in the refrigerator is because when it is exposed to moisture, it can become sticky. Condensation from the cold air can cause colored fondant to streak or run. It’s always best not to refrigerate a cake with fondant decoration. Leftover fondant should be tightly wrapped and stored at room temperature. Your refrigerated leftover fondant is still safe to use, but next time store any extras in the cabinet.