A granulated sugar produced into very fine textured grains of sugar. this sweetener is an unrefined sugar made from unrefined sugar cane. Since there has been no refining to remove the color or flavor, the sugar has a pale caramel color when melted and is not considered to be a good sugar for baking if the white color is to be retained for the food being created.
Otherwise, it provides a finer and somewhat denser texture to the food being baked. Since caster sugar is very fine textured, it is a good choice as a beverage sweetener as the sugar dissolves quickly in liquid. It is also a good sugar to use for making meringues.