Is Icing Sugar The Same as Superfine Sugar? Can I use Icing sugar as a substitute?
Icing sugar is also known as powdered sugar and/or confectioner’s sugar. It usually contains a bit of corn starch to prevent clumping, but you should be able to use super-fine sugar if you run it through the blender or food processor for a couple of minutes. I got this off of a website: Superfine sugar is regular (granulated) sugar that has been ground more finely. It is sometimes sold as baker’s sugar and is also known as castor sugar. It can be used as a substitute for regular sugar and may produce a slightly finer crumb(texture) in the finished product than regular sugar would, a result that is preferred by many bakers. Regular sugar, however, should not be substituted in the same way. Superfine sugar is almost always called for in recipes that are very light, like meringues and angel food cakes. It contributes to a light, delicate final product because the small grains dissolve into the mixture very quickly, while a coarser crystal might not be incorporated as fully or as quickly.