Stir warm water, corn syrup, and almond extract together in a small bowl until corn syrup and extract have dissolved. Place confectioners’ sugar into a separate bowl and add liquid ingredients. Beat with an electric mixer on low speed until royal icing is smooth. Store in a lidded container for up to a week; stir thoroughly before using.
For thick icing, which you will need for outlining and details, add more sugar until icing is quite thick. Icing can be thinned with a few drops of water to make a glaze for filling in outlines or dipping cookies.
Icing hardens into a shiny glaze quickly. Keep stirring your bowl of icing as you work with it.
Source: Read Full Article