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 ↓
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 the filling
Preheat the oven to 350°F (175°C).
In a bowl, combine milk, egg yolks, grated apples, melted butter, sugar, nutmeg, and salt.
Pour the mixture into a pie crust and bake until set.
Make the frosting and finish
Beat the egg whites until soft peaks form, then gradually add sugar and continue beating until stiff peaks form.
Spread the frosting over the pie and brown delicately under the broiler.
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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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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Apple + buttertop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Milk + nutmegtop 15% of all pairsSmell alikemoderateCooked together14,685 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Enriches the filling and helps it thicken and set into a custard when baked.
- Egg whites
- Whipped with sugar to form a stable meringue frosting that holds its shape.
- Milk
- Provides the liquid base that sets with the egg yolks into a custard.
- Grated apples
- Supply moisture and fruit flavor to the custard filling.
- Sugar
- Sweetens the custard and, when beaten into the egg whites, stabilizes the meringue.
The step that matters
Baking the custard until set. Egg proteins coagulate as the custard heats; underbaking leaves a runny filling, while overbaking can make it curdle or weep. Watching for a set center prevents both.
Swap the apple
How well each one fits the dish's main ingredients (milk, egg, butter, sugar, nutmeg):
- Vanillafits better
- Figfits better
- Lemonfits better
- Applethe original
Fit is the average pairing score against milk, egg, butter, 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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