Used fondant icing sugar to make the icing. (bbcgoodfood.com)
If you're not familiar with it, this walnut candy consists of a rich walnut paste covered in fondant icing. (oliviascuisine.com)
A recipe may also ask you to «dust» a work surface with flour or icing sugar to stop dough or fondant icing from sticking before kneading and rolling it out. (bbcgoodfood.com)