I would like to send cookies and royal icing to my little niece so she would be able to decorate cookies by herself.
Since royal icing will be out of fridge, I will make it only with sugar, water and colors. But there is another problem - after a day or two out of fridge the water starts to separate. I know it can be mixed again, but I would like to send royal icing in bags so my little niece can start decorating without any additional work.
Do you have any idea how to make royal icing so the water will not separate if not storing it in the fridge?
Thank you for all your advices.