Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Orange Pie
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Make the filling
Preheat the oven to 350°F (175°C).
In a bowl, mix grated orange, sugar, butter, egg yolks, and flour until well combined.
Add sweet milk and mix thoroughly.
Pour the mixture into a pie crust and bake until set.
Make the topping and finish
In another bowl, beat egg whites until stiff peaks form, then gradually add sugar until sweet.
Spread the frosting over the baked pie 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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 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).
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 and whites whip into a foam that forms the topping.
- Orange
- Provides the main citrus aroma and bright, tangy flavor.
- Sugar
- Sweetens the filling and helps stabilize the beaten egg white topping.
- Flour
- Thickens the filling so it sets when baked.
- Sweet milk
- Adds liquid and moisture to the filling.
- Butter
- Adds fat for richness and a smooth, tender texture.
The step that matters
Beating the egg whites to stiff peaks. Any trace of yolk or fat in the whites, or adding sugar too quickly, can stop them from whipping into a stable foam. A stable foam holds its shape and browns evenly in the oven.
Swap the orange
How well each one fits the dish's main ingredients (sugar, milk, egg, flour, butter):
- Vanillafits better
- Raisinfits better
- Figfits better
- Orangethe original
Fit is the average pairing score against sugar, milk, 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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