Why it works: Flour and sugar are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 92,116 recipes. Both carry phenylacetaldehyde, which smells hawthorne, honey. The science ↓
Orange Filling
Ingredients
Directions
Prepare the oranges
Grate the yellow rind from the oranges and set aside.
Peel the oranges, discard all white rind, and cut them into small pieces, removing the center pith and seeds.
Make the filling
Place the orange pieces in a bowl set over boiling water.
Stir in the flour mixed with water to form a smooth paste.
If the paste is too stiff, add a little more water.
Stir constantly until thickened.
Beat the yolk of the egg with the sugar until creamy.
Stir the creamy yolk mixture into the orange mixture and cook for 2-3 minutes.
Remove from heat.
Add lemon juice if not tart enough.
Frost and finish
Frost with a yellow frosting made by mixing pulverized sugar into the beaten yolk of an egg.
Or use a boiled frosting with the yolk instead of the egg white.
Flavor with the remaining grated peel.
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.
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Orange + sugartop 20% of all pairsSmell alikelowCooked together19,212 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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Orange + flourtop 21% of all pairsSmell alikemoderateCooked together6,821 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and egg barely smell alike, yet cooks put them together in 106,462 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
- Oranges
- Supply the bright citrus flavor and the juicy pieces that make up the filling.
- Flour
- Thickens the orange mixture into a smooth paste as it cooks.
- Egg yolk
- Enriches the filling and adds richness and colour to the mixture.
- Sugar
- Sweetens the filling and balances the citrus tartness.
The step that matters
Stir constantly until thickened. Flour thickens only as its starch heats in liquid; if stirring stops, lumps and scorching can form, leaving the filling grainy or uneven. Stirring keeps heat even.
Swap the orange
How well each one fits the dish's main ingredients (flour, sugar, egg):
- Raisinfits better
- Vanillafits better
- Lemonfits better
- Orangethe original
Fit is the average pairing score against flour, 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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