Why it works: Orange and lemon 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 ↓
Orange Filling
Ingredients
Directions
Prepare
Beat the yolks of the eggs in a bowl.
Grate the rind of one orange and mix it with the sugar.
Add the juice of the two oranges and the lemon to the mixture.
Stir in the hot water and corn starch.
Cook
Cook all ingredients together in a double boiler until thickened.
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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Orange + lemontop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Orange + corntop 11% of all pairsSmell alikemoderateCooked together586 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Lemon + corntop 13% of all pairsSmell alikemoderateCooked together1,927 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- Add richness and help set the filling as it thickens.
- Sugar
- Sweetens the filling and balances the citrus acidity.
- Orange juice
- Provides the main citrus flavour and liquid for the filling.
- Lemon juice
- Adds extra acidity that sharpens the orange flavour.
- Corn starch
- Thickens the liquid into a smooth, set filling when heated.
The step that matters
Cook in a double boiler until thickened. Gentle indirect heat lets the starch swell and the egg yolks thicken without scrambling. Direct high heat can curdle the yolks or scorch the filling.
Swap the orange
How well each one fits the dish's main ingredients (egg, sugar, lemon, corn):
- Limefits about as well
- Vanillafits about as well
- Orangethe original
- Blueberryfits less well
Fit is the average pairing score against egg, sugar, lemon, corn. 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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