Best Caster Sugar AI pick
Chosen by an AI model from its trained knowledge, with its reasoning.
AI pick (line): C&H Baker's Sugar
An ultrafine cane sugar that works as caster sugar: it dissolves fast in meringues, sponges and cold drinks without grinding it yourself.
Not for: Cooks who only make occasional caster-sugar recipes, because they can pulse granulated sugar in a food processor instead.
AI picks by need
For small box for cocktails
Domino Superfine Sugar (line)
A small resealable carton of superfine sugar that dissolves quickly in cold drinks and is handy at a bar.
Not for: Regular bakers, who will get through the small box too quickly.
For following UK recipes
Tate & Lyle Caster Sugar (line)
This is the caster sugar British recipes are written around, so results match the recipe.
Not for: US shoppers who can easily buy a local superfine sugar.
What the AI looks for in Caster Sugar
- Crystal fineness
- Finer than granulated but still crystalline, not a powder; labelled caster, superfine, ultrafine or baker's sugar Fine crystals dissolve before meringue or batter sets, which prevents weeping and grittiness.
- No starch added
- The ingredient list should be sugar only Powdered sugar contains starch and is not a substitute for caster sugar in meringues or creamed cakes.
- Substitute by weight
- Swap 1:1 by weight with granulated sugar, not by volume Finer crystals pack more densely, so a cup holds more sugar.
Brands that matter
- C&H: Baker's Sugar is its ultrafine option.
- Domino: Superfine sugar in a small carton.
- Tate & Lyle: The standard caster sugar in the UK, with golden versions too.
What to avoid
- Using powdered or icing sugar as a caster-sugar substitute
- Paying a large premium when a food processor can produce a workable caster sugar from granulated
Questions
Are caster sugar and superfine sugar the same thing?
Yes, for practical purposes. Caster is the UK name and superfine or baker's sugar is the US name.