Why it works: Butter and milk 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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare
Preheat the oven to 350°F (175°C).
Make the filling
In a bowl, mix the grated apples, egg yolks, sugar, nutmeg, and milk until well combined.
Pour the mixture into a pie crust and dot with a little butter.
Bake and finish
Bake for about 30-40 minutes or until set.
Whip the egg whites until stiff peaks form and frost the pie with them before serving.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Apple + milktop 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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Nutmeg + milktop 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
- Thicken the custard as they set and add richness to the filling.
- Grated apples
- Provide the main fruit flavor and moisture in the filling.
- Sugar
- Adds sweetness and helps balance the tartness of the apples.
- Milk
- Adds moisture and liquid that sets with the eggs into a custard.
- Egg whites
- Whipped into stiff peaks to make a light frosting for the top.
The step that matters
Baking until set. Egg proteins coagulate as the custard heats, so the filling sets firm. Underbaking leaves it runny, while overbaking can make it weep or curdle.
Swap the apple
How well each one fits the dish's main ingredients (egg, sugar, nutmeg, butter, milk):
- Vanillafits better
- Figfits better
- Lemonfits better
- Applethe original
Fit is the average pairing score against egg, sugar, nutmeg, butter, milk. 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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