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Dessert

Egg Icing

A light icing made from beaten egg whites and sugar, flavored with lemon, orange, vanilla, or similar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Lemon and orange match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Egg Icing

Ingredients

Directions

Make the icing

  1. Beat the egg whites until frothy, not stiff.

  2. Gradually add the sugar while continuing to beat.

  3. Flavor to taste with your choice of flavoring, adding very little liquid.

Finish and spread

  1. When stiff enough, dip a knife in cold water and smooth the icing over the cake.

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. Lemon + orangetop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  2. Orange + vanillatop 6% of all pairs
    Smell alikemoderate
    Cooked together2,371 recipes

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

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

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

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

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

Egg whites
Whip into a foam that gives the icing its light, airy structure.
Sugar
Adds sweetness and, as it dissolves into the foam, thickens the icing.

The step that matters

Adding flavoring with very little liquid. Extra liquid loosens the foam of whipped egg whites and sugar, so the icing may not stiffen enough to hold its shape on the cake.

Swap the lemon

How well each one fits the dish's main ingredients (sugar, egg, orange, vanilla):

  1. Figfits better
  2. Blueberryfits better
  3. Peachfits about as well
  4. Lemonthe original

Fit is the average pairing score against sugar, egg, orange, vanilla. 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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