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Dessert

White Frosting

A light frosting made from sugar, egg whites, powdered sugar, lemon juice, and optional vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

White Frosting

Ingredients

Directions

Make the frosting

  1. Dissolve sugar in just enough water to remove lumps.

  2. Beat the egg whites lightly and add to the sugar mixture.

  3. Place the bowl in a vessel of boiling water and beat the mixture.

  4. Continue beating until the mixture thickens and cools.

Finish and spread

  1. For additional frosting, gradually add powdered sugar to the egg whites while stirring.

  2. Stir in lemon juice and vanilla if desired.

  3. Spread the frosting on your cake with a knife.

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 + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

    Shared aroma: beta-damascenone (apple, rose).

  2. Lemon + vanillatop 15% of all pairs
    Smell alikemoderate
    Cooked together5,961 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

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

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

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

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

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

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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

White sugar
Dissolves into a syrup that gives the frosting its sweetness and body.
Egg whites
Whip and set with heat to form a light, stable, airy structure.
Powdered sugar
Stiffens the frosting and adds sweetness when stirred into the egg whites.
Lemon juice
Adds acidity that balances sweetness and helps keep the foam stable.

The step that matters

Beating over boiling water. Heat from the water bath cooks the egg whites as they are beaten, setting the foam. Beating long enough lets the mixture thicken and cool into a spreadable frosting rather than a runny one.

Swap the vanilla

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

  1. Orangefits about as well
  2. Vanillathe original
  3. Limefits less well
  4. Raisinfits less well

Fit is the average pairing score against sugar, egg, lemon. 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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