The go-to sugar for baking in the U.K., explained.

What Is Caster Sugar?

So, what is caster sugar?

caster sugar

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Caster sugar is finely groundgranulated sugar.

If its not at your local shops, you’re able to purchase it from online retailers.

Keep in mind that its typically called superfine sugar instead of caster sugar in America.

If you find both white caster sugar and golden caster sugar, know that they are pretty much interchangeable.

It depends on the recipe, but these two types of sugar are pretty interchangeable.

Caster sugar and confectioners sugar are generally not interchangeable.

Just remember that confectioners sugar typically contains cornstarch, which affects foods texture.