Why it works: Milk and apple are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 4,104 recipes. Both carry 4-heptenal, which smells creamy, biscuit. The science ↓
Apple Custard 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.
Prepare
Preheat the oven to 350°F (175°C).
Partially bake the pie crust.
Beat the egg whites and yolks separately.
Make the filling
Mix the egg yolks with the strained apples and add nutmeg.
Stir in the milk and then fold in the beaten egg whites.
Bake
Pour the filling into the partially baked crust and bake until set.
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 + appletop 11% of all pairsSmell alikemoderateCooked together4,104 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Apple + nutmegtop 12% of all pairsSmell alikemoderateCooked together3,790 recipes
Shared aroma: estragole (anise, licorice).
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Milk + nutmegtop 15% of all pairsSmell alikemoderateCooked together14,685 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Egg + nutmegtop 17% of all pairsSmell alikelowCooked together24,744 recipes
Shared aroma: acetic acid (sour, vinegar).
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Sugar + appletop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
Egg and nutmeg barely smell alike, yet cooks put them together in 24,744 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
- Set the custard as they cook and add richness and structure to the filling.
- Milk
- Provides the liquid base that the eggs thicken into a smooth custard.
- Sugar
- Adds sweetness and balances the tartness of the sour apples.
- Sour apples
- Supply the main flavor and acidity, and their pulp adds body to the filling.
The step that matters
Bake until set. Eggs thicken as their proteins coagulate with heat. Underbaking leaves a runny custard, while overbaking can make it curdle or weep, so check for a firm center that jiggles only slightly.
Swap the apple
How well each one fits the dish's main ingredients (milk, egg, sugar, nutmeg):
- Vanillafits better
- Raisinfits better
- Figfits better
- Applethe original
Fit is the average pairing score against milk, egg, sugar, nutmeg. 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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