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To Clarify Damaged Syrup

A method for clarifying sugar syrup using egg white, ivory black, and charcoal.

From an old cookbook · modernised transcription
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Why it works: Sugar and egg are a kitchen classic. They rank in the top 21% of all ingredient pairs, and cooks put them together in 122,807 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

To Clarify Damaged Syrup

Ingredients

Directions

  1. Place the syrup or sugar in a preserving pan.

  2. Add enough water to bring the liquid to weigh about 20 degrees on a syrup gauge.

  3. Whisk the egg white with a little water, ivory black, and charcoal.

  4. Stir this mixture into the sugar over heat.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Sugar + eggtop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

    Shared aroma: 2-nonenal (fatty, green).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Sugar
Provides the sweetness and body of the syrup that the clarifying process is applied to.
Egg white
Coagulates when heated, trapping impurities so they can be skimmed off, leaving the syrup clear.
Ivory black
A fine carbon powder that adsorbs colour and impurities from the syrup as it heats.
Charcoal
Powdered charcoal adsorbs impurities and colour, helping the syrup become clearer.

The step that matters

Stirring the egg white mixture into the sugar over heat. The egg white must be evenly dispersed before it heats. As it warms it coagulates and collects impurities; if it clumps or is unevenly mixed, the syrup will not clear properly.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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