Recently I made a treat that used confectioners’ sugar in the frosting. Confectioners’ sugar, also called powdered sugar or icing sugar, is granulated sugar that has been ground into a fine powder. It can be sprinkled over a baked good, but it also readily dissolves in liquid making it easy to stir into icings and frostings. Just be sure not to confuse it with superfine sugar or bakers’ sugar; they are ground finer than granulated sugar but not as fine as confectioners’ sugar.
So, I have taught you exactly what confectioners’ sugar is. Now I am here to offer you a method for making your own, in case you are preparing frosting while a cake cools and find that you have run out of powdered sugar. (No, of course, this has never happened to me. Or, at least, not this week.)
The Spruce Eats gives us their advice: “All you will need is a blender, measuring cup, a clean dish towel, (and) sugar. … For each cup of confectioner’s (sic) sugar needed use one cup of regular granulated sugar. … Put the granulated sugar into the blender and secure the lid. Place the dishtowel over the top of the blender to catch any powder “smoke.” Blend using the pulse method until the sugar turns to powder. This method works best in small quantities, 1 to 2 cups at a time.
If you are making even a smaller amount, alternatively you can use a coffee grinder, spice grinder, or mini-food processor. Just be mindful that the sugar crystals can scratch plastic, so consider carefully before making the powdered sugar in a plastic blender or processor.” I have a dry cup for my Vitamix which works beautifully for making powdered sugar.
Store bought confectioners’ sugar will have additives, such as cornstarch. You can opt to make your own confectioners’ sugar just in emergency situations, or you can prepare it yourself to ensure that your sugar has no additives.