How to Make Powdered Sugar: 10 Steps (with Pictures) - wikiHow
Wipe the inside of your blender or spice grinder with a dry cloth. Any residual moisture from the last rinse will make the sugar stick to the sides. Advertisement. 3. Measure white granulated sugar. Only blend a maximum of 1 to 1½ cups (200–300g) in an average blender, or 2 cups (400g) in a high-powered one.