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To Clarify Sugar for Water Ices

A clarified sugar syrup made by boiling water, sugar, and whipped egg white, then cooling before adding fruit juices.

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 Sugar for Water Ices

Ingredients

Directions

Make the syrup

  1. Combine water, sugar, and whipped egg white in a pot.

  2. Mix well and bring to a boil.

  3. Boil for 7 to 8 minutes, skimming off any scum.

Cool and finish

  1. Allow the syrup to cool before adding fruit juices.

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

Granulated sugar
Dissolves into the water to make a sweet syrup that sets the texture of the ice.
Whipped egg white
Helps gather impurities that rise as scum, which can then be skimmed off to clarify the syrup.

The step that matters

Cool the syrup before adding fruit juices. Fresh juices are delicate and can lose bright flavor when exposed to heat. Cooling the syrup first also keeps the juice from partly cooking and helps the mixture chill evenly for freezing.

“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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