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Castor sugar

Castor sugar is finely granulated refined sucrose whose small crystals dissolve readily, making it useful in baking, desserts, and drinks.

Castor sugar — illustrative ingredient image

About Castor sugar

Castor sugar, also called caster sugar, is finely granulated white sugar made from refined sucrose. Its small crystals pour and dissolve more readily than standard granulated sugar, while remaining a dry, free-flowing ingredient. It is a distinct granulation of sugar rather than powdered or confectioners’ sugar, which is ground much finer and may include an anti-caking ingredient.

It is used in baking, desserts, and drinks where quick dissolving or a fine grain is useful. It is commonly sold as white sugar, though some markets also sell a golden version with a light molasses note. The precise grain size can vary by producer, so names for fine sugars are not always interchangeable across markets.

Ingredient type
whole food

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Where castor sugar appears

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Name examples awaiting language review. Confirm the specific food or product.

Local names for castor sugar

Names and romanised forms to recognise on menus and labels.

British English

caster sugar

American English

superfine sugar

Available names only. Languages may be spoken in other countries; a name alone does not identify every ingredient in a dish.

Castor sugar nutrition & diet

Castor sugar nutritional value

Reference: Sugar, caster

Per 100 g of 100 g edible portion in the named official reference form.

Calories
406kcal
Protein
0.0g
Carbs
99.9g
Fat
0.0g

Official national food-composition reference. The displayed food form is part of the estimate; cultivar, recipe, brand, processing and preparation can change values.

Nutrition comparisons should distinguish fine granulated castor sugar from powdered sugar and from golden or otherwise less-refined versions. Products with added ingredients are not equivalent to plain granulated sugar.

Dietary compatibility

  • Vegan
    Not established
  • Vegetarian
    Not established
  • Pescatarian
    Not established
  • Keto
    Not established
  • Paleo
    Not established
  • Low-carb
    Not established
  • Halal
    Not established
  • Kosher
    Not established
What these diet assessments mean
Vegan · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Vegetarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Pescatarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Keto · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Paleo · Not established
The ingredient form and processing have not been assessed against this dietary pattern.
Low-carb · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Halal · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish halal status.
Kosher · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish kosher status.

For the plain ingredient · Awaiting review. Diet compatibility is not allergy suitability or halal/kosher certification. Keto and low-carb depend on the portion.

Reviewed ingredient entryIngredient reference · Preparations vary

AI-generated illustration for visual context. It does not identify a particular product or establish allergen content.

Sources & review

Nutrition reference: New Zealand FOODfiles 2024 — W20 ↗. Values are scaled from 100 g of the recorded edible form. Individual portions have no assumed fixed weight.

Expanded overview, name examples and nutrition notes are database drafts awaiting editorial review. Numeric nutrition values, where shown, have their own source and food-form reference.

The ingredient description and dish connections come from the draft catalogue and may change after review.

Last recorded verification: .