India Tree Caster Sugar

Caster, or castor, sugar is a type of fine granulated sugar that's widely available in the United Kingdom. It's not quite as common in the United States, though you can find it in some baking aisles under the name "superfine sugar." Its texture is somewhere between regular granulated sugar and confectioners' sugar. What's with the name? Years ago, this type of sugar was often found in a shaker (called a caster) and sprinkled on fresh fruits.  

Caster sugar is ideal for light and airy desserts, such as meringues and souffle's. Because of its fine texture, it dissolves more readily than granulated sugar.