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 for Pie
Ingredients
Directions
Make the filling
In a bowl, mix sugar, flour, egg yolks, salt, orange rind, orange juice, and lemon juice.
Pour the mixture over ¾ cup of boiling water.
Stir in a double boiler until thick.
Assemble
Pour the filling into a pie crust and cover with meringue.
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.
-
Orange + lemontop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Lemon + buttertop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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 and add richness as they set with gentle heat.
- Flour
- Thickens the filling by absorbing liquid as it heats.
- Sugar
- Sweetens the filling and balances the sharp citrus juice.
- Orange juice
- Provides the main citrus flavor and acidity in the filling.
The step that matters
Stir in a double boiler until thick. Egg yolks and starch thicken as they heat, but overheating can curdle the yolks or leave the starch grainy. Gentle, steady heat and constant stirring give a smooth, thick custard.
Swap the orange
How well each one fits the dish's main ingredients (sugar, flour, egg, lemon, butter):
- Raisinfits better
- Vanillafits better
- Figfits about as well
- Orangethe original
Fit is the average pairing score against sugar, flour, egg, lemon, butter. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Orange Bundt Cake349 recipes
Lemon Cake228 recipes
Lemon Ice147 recipes
Orange Cream Rice Pudding121 recipes