Superfine Sugar

Superfine sugar is white granulated sugar with very small crystals. It dissolves rapidly, feels like fine sand between fingers, and blends smoothly into batters, meringues, and cold drinks. Bakers use it to achieve tender crumbs and crisp meringues, and bartenders favor it for evenly sweetened cocktails. Often sold as caster or castor sugar.\n\nPopularized in the United Kingdom as caster sugar, it spread through British and Commonwealth baking and confectionery and into modern cocktail culture. Producers make it by milling standard granulated cane or beet sugar to a smaller crystal size.