Processed
Icing
S tier
Icing sugar is pulverised white cane sugar blended with a small percentage of anti-caking starch (usually maize) so it stays powdery for buttercream, glace icing, and dusting. British “icing” matches American powdered/confectioners’ sugar in role; the starch slightly dulls pure sucrose taste and thickens wet icings. It dissolves into smoothness that crystal sugars cannot match without long beating. Sift before use to break lumps. Not ideal for caramel or yeast doughs where starch interferes. For glossy French-style icings and royal icing, icing sugar is non-negotiable; caster will stay gritty.
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Characteristics
Preparations
Traits
History
Mill-ground icing sugars with starch enabled smooth Victorian cake finishes.
Retail paper packets of icing sugar became standard for home cake decoration.
Post-war baking culture fixed icing sugar as the UK cake-topping default.
Unrefined and golden icing sugars offered molasses-tinted alternatives for natural icings.