Simply Great Recipes
Make your own Caster Sugar
Caster sugar or Superfine sugar is simply made with a regular electric coffee grinder and granulated sugar.
Cover the blades of an electric coffee grinder with regular sugar. Grind for approximately 30 seconds and you will have Caster sugar.
If you need a large amount of super-fine sugar or Caster Sugar, you can use a food processor to grind the sugar.