Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Orange Pie
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the filling
Grate the rind and juice the oranges.
In a bowl, mix the orange juice and zest with sugar, egg yolks, flour or cornstarch, melted butter, and water until well combined.
Line a pie pan with pie crust and pour the filling in.
Bake in a 400°F (200°C) oven until the filling thickens.
Add the meringue and brown
Beat the egg whites until stiff, then gradually mix in 3 tablespoons of sugar.
Spread the meringue on top of the pie, sprinkle with sugar, and return to the oven to brown.
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 + 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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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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 as they set during baking, giving it a custard-like body.
- Egg whites
- Whip into a stiff foam that forms the meringue topping, which browns in the oven.
- Flour or cornstarch
- Thickens the orange filling so it sets rather than staying runny.
- Orange
- Supplies juice for acidity and zest for aroma and bright flavour.
- Sugar
- Sweetens the filling and helps stabilise the whipped egg white meringue.
The step that matters
Beat the egg whites until stiff. Whites must be whipped to a firm foam before sugar is added; under-whipped or greasy whites will not hold their peaks and the meringue will weep or slump. Any fat or yolk left in the bowl prevents full whipping.
Swap the orange
How well each one fits the dish's main ingredients (sugar, egg, flour, butter):
- Raisinfits better
- Vanillafits better
- Figfits better
- Orangethe original
Fit is the average pairing score against sugar, egg, flour, 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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