caster sugar
US /ˈkæs.tər ˌʃʊɡ.ər/
UK /ˈkæs.tər ˌʃʊɡ.ər/
1.
a type of finely granulated sugar that dissolves quickly, often used in baking and for sweetening drinks
:
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Add two tablespoons of caster sugar to the mixture.
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She sprinkled caster sugar over the fresh berries.