caster sugar

British  

/ ˈkɑːstə /

noun

1. finely ground white sugar

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Example Sentences

While caster sugar is available in America — where you can more readily find it labeled "superfine sugar" or "baker's sugar" — it tends to be somewhat more expensive than your go-to granulated sugar.

From Salon

Our take on the traditional Italian torte is made with just three ingredients — walnuts, eggs, caster sugar — plus powdered sugar for dusting on top of the baked cake.

From Salon

There's a chance you'll find caster sugar in some regular grocery stores, but any specialty baking shop or big-box online retailer is guaranteed to carry it.

From Salon

Typically we use granulated, superfine, or caster sugar for baking.

From Salon

Otherwise, when I see a recipe call for superfine — often in those of British origin, where it may be listed as caster sugar — I just use granulated.

From Washington Post