Caster sugar goes by a variety of names, including castor sugar, baker's sugar, and superfine sugar, the last of which alludes to what exactly it is: a finer granulated sugar.

This is the British term for sugar with small grains that are between granulated and icing sugar in terms of fineness. It is sometimes spelled castor sugar, and is known as ‘superfine’ sugar ...

Granulated sugar is the most common type of sugar. Its neutral flavor provides a sweet blank canvas; it’s your best option when a recipe simply calls for sugar.

With it, you can make your own brown, caster, confectioners' and other sugars, and eliminate unnecessary packaging.

With it, you can make your own brown, caster, confectioners' and other sugars, and eliminate unnecessary packaging.

Superfine, which may also be labeled as caster, bar or even baker’s sugar, is ideal for situations where you really want to make sure the sugar dissolves, such as a delicate angel food cake ...