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 Pie
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the filling
Preheat the oven to 400°F (200°C).
Grate the rind of one orange and juice two oranges.
In a bowl, mix sugar and flour together. Add the beaten egg yolks and melted butter to the sugar mixture.
Pour the mixture into a pie pan lined with pie crust.
Bake and top
Bake until it resembles a finely baked custard.
Beat the egg whites with sugar until stiff peaks form. Spread the beaten egg whites over the pie and return to the oven to brown slightly.
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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 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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Butter + lemontop 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
- Eggs
- Yolks thicken the filling into a custard, and whites whipped into a meringue form the top.
- Sugar
- Sweetens the filling and, when beaten with the whites, stabilises the meringue topping.
- Orange juice
- Provides the main citrus flavour and acidity that balances the sweetness.
- Butter
- Adds richness and fat, giving the filling a tender texture.
- Flour
- Helps thicken the filling so it sets rather than running.
The step that matters
Baking the filling until set. Underbaked filling stays runny and soupy, while overbaking can make the egg yolks curdle and turn grainy. Baking until it resembles a finely baked custard means the yolks have just set, which gives a firm, smooth base for the meringue.
Swap the lemon
The recipe marks lemon as optional. How well each one fits the dish's main ingredients (orange, sugar, flour, egg, butter):
- Vanillafits better
- Raisinfits about as well
- Lemonthe original
- Figfits less well
Fit is the average pairing score against orange, sugar, flour, egg, 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.
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