Storing Fondant (Ready to Roll) Icing

Our answer

Unfortunately rolled fondant icing (ready to roll icing) does dry out once it comes into contact with the air and will not store indefinitely once opened but we have a couple of tips to hopefully keep it usable for 3-4 weeks. First if you are rolling out the icing and saving the leftover trimmings the try not to use too much icing sugar or cornflour on the rolling surface as this will dry out the icing more quickly. If possible roll out on a non-stick silicone mat or you can also grease your rolling surface very lightly with a white fat (eg White Flora, Trex or Crisco) to reduce sticking.

To store the leftover icing first wrap it very tightly in a double layer of clingfilm (plastic wrap) then put it in a resealable plastic food bag and squeeze all of the air out of the bag. Seal the bag well - if you have a large plastic clip then use this to seal the bag just above the ball of icing to reduce the risk of air getting in. Finally put the whole lot in an airtight plastic box and seal the lid tightly then store in a cool place and preferably away from light. It is slightly laborious but does seem to keep the icing soft for 3-4 weeks. We would not recommend freezing left over fondant as it tends to develop beads of moisture as it thaws and can end up being a little "gummy" after defrosting.