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Dessert

Orange Icing

A light icing made from egg whites, powdered sugar, and grated orange zest.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Sugar and orange are a kitchen classic. They rank in the top 20% of all ingredient pairs, and cooks put them together in 19,212 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Orange Icing

Ingredients

Directions

  1. Beat the egg whites until light.

  2. Gradually add the powdered sugar, mixing until smooth.

  3. Fold in the grated oranges until well combined.

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 + orangetop 20% of all pairs
    Smell alikelow
    Cooked together19,212 recipes

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

  2. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

  3. Egg + orangetop 31% of all pairs
    Smell alikelow
    Cooked together10,696 recipes

    Shared aroma: 2,4-decadienal (seaweed).

Sugar and orange barely smell alike, yet cooks put them together in 19,212 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
Whipped to trap air, giving the icing a light, airy structure.
Powdered sugar
Dissolves into the whites to add sweetness and body, making the icing smooth.
Oranges
Grated zest and juice add aroma and bright acidity to the icing.

The step that matters

Beat the egg whites until light. Under-beaten whites will not hold air, so the icing stays dense. Over-beaten whites turn dry and grainy and fold poorly with the sugar and orange.

Swap the orange

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

  1. Vanillafits better
  2. Raisinfits better
  3. Lemonfits better
  4. Orangethe original

Fit is the average pairing score against egg, sugar. 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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