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
Stew the apples until very soft, then rub them through a sieve.
In a bowl, combine the stewed apples, sugar, milk, butter, eggs, and grated lemon peel, and mix well until smooth.
Bake and serve
Pour the mixture into a pie crust made from puff pastry.
Bake at 350°F (175°C) until set and golden.
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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Apple + milktop 11% of all pairsSmell alikemoderateCooked together4,104 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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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 + lemontop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
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, giving the filling its structure.
- Milk
- Provides liquid and richness that creates a smooth, custard-like texture.
- Butter
- Adds fat for richness and a tender, smooth mouthfeel.
- Sugar
- Adds sweetness and helps balance the tartness of the apples.
- Stewed apples
- Supply the main fruit flavor and moisture for the filling.
The step that matters
Bake until set. Eggs thicken the custard as they cook, so underbaking leaves the filling runny, while overbaking can make it curdle and weep. Watch for a set centre and golden edges.
Swap the apple
How well each one fits the dish's main ingredients (sugar, milk, butter, egg, lemon):
- Vanillafits better
- Figfits better
- Peachfits about as well
- Applethe original
Fit is the average pairing score against sugar, milk, butter, egg, lemon. 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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