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Dessert

Orange Filling

A sweet orange custard used as a cake filling.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Butter and egg are a kitchen classic. They rank in the top 17% of all ingredient pairs, and cooks put them together in 118,967 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Orange Filling

Ingredients

Directions

Make the filling

  1. In a bowl, beat the egg yolks.

  2. Add sugar, grated orange rind, butter, and orange juice to the eggs.

  3. Cook the mixture over hot water, stirring until it thickens.

Assemble

  1. Spread the filling between layers of 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. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  2. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Orange + sugartop 20% of all pairs
    Smell alikelow
    Cooked together19,212 recipes

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

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

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

  5. Orange + buttertop 23% of all pairs
    Smell alikemoderate
    Cooked together7,301 recipes

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

Orange and sugar 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 yolks
Thicken the filling as they set with gentle heat, giving it a rich, smooth body.
Sugar
Sweetens the filling and balances the tartness of the orange juice.
Orange juice
Provides the main liquid and bright citrus acidity and flavour.
Butter
Adds fat for a smoother, richer texture in the finished filling.

The step that matters

Cooking over hot water until it thickens. Egg yolks set when heated, but too much heat can curdle them into a grainy texture. Gentle heat over hot water and constant stirring thickens the filling evenly without scrambling the eggs.

Swap the orange

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

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

Fit is the average pairing score against sugar, butter, 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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