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Icing Sugar for Bride Cakes, &C.

A powdered icing sugar mixture whisked with egg whites to make a light, spreadable icing for bride cakes.

From an old cookbook · modernised transcription
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Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Icing Sugar for Bride Cakes, &C.

Ingredients

Directions

Prepare

  1. Warm an earthenware pan.

  2. Whisk the egg whites until stiff.

Make the icing

  1. Gradually add the icing sugar while whisking continuously.

  2. Stop whisking when the mixture appears light.

  3. Beat well with a spatula until all sugar is incorporated.

  4. To test, drop a little icing back into the basin; it should keep its shape.

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 + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  2. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

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

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

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 recipes: they work on texture and structure more than aroma.

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

What each ingredient does

Egg whites
Whisked into a stiff foam that gives the icing its light structure and body.
Icing sugar
Dissolves into the foam to add sweetness and firm the mixture into a spreadable icing.

The step that matters

Stop whisking when the mixture appears light. Whisking past this point can over-beat the egg white foam, making it dry, grainy and prone to collapse. Stopping at the right moment keeps the icing smooth and holding its shape.

Swap the lemon

The recipe marks lemon as optional. How well each one fits the dish's main ingredients (sugar, egg):

  1. Vanillafits better
  2. Raisinfits about as well
  3. Lemonthe original
  4. Datesfits less well

Fit is the average pairing score against sugar, egg. Candidates are from the same food group and used in at least 100 recipes.

“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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