caster sugar has the same composition as granulated sugar, but the crystals are smaller so it dissolves quickly. it's best for baking, especially light sponges and meringues. 3. icing sugar is white sugar ground to a fine powder so it dissolves quickly and makes smooth icing.
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| sugar | raw sugar |
|---|
| kj | 1700 |
|---|
| % sugars | 99 |
|---|
| gi | 65 |
|---|