What Is Caster Sugar and What's a Good Substitute?
WEBNov 3, 2023 · The best substitute is DIY caster sugar. Make the British ingredient at home with just granulated sugar and a food processor, blender, or coffee grinder. To make caster sugar, simply pulse or blend granulated sugar until it reaches a finely ground — but not powdery — consistency. Two or three quick pulses will usually do the trick.