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 custard
Preheat oven to 350°F (175°C).
In a bowl, combine milk, egg yolks, grated apples, melted butter, sugar, nutmeg, and salt.
Pour mixture into pie crust and bake until set.
Make the frosting and finish
Beat egg whites until soft peaks form, then gradually add sugar and continue beating until stiff peaks form.
Spread frosting over pie and brown delicately under 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.
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Milk + appletop 11% of all pairsSmell alikemoderateCooked together4,104 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
-
Apple + nutmegtop 12% of all pairsSmell alikemoderateCooked together3,790 recipes
Shared aroma: estragole (anise, licorice).
-
Apple + buttertop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
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
- Thicken the custard as they set when baked, giving the pie a creamy texture.
- Milk
- Provides the liquid base of the custard, which sets gently in the oven.
- Egg whites
- Whipped to stiff peaks with sugar to form a light, airy topping.
- Grated apples
- Supply the fruit flavor and moisture in the custard filling.
- Sugar
- Adds sweetness and helps the egg whites hold stiff peaks in the frosting.
The step that matters
Beat the egg whites to stiff peaks. Adding sugar gradually while beating builds a stable foam. Under-beaten whites stay runny and spread unevenly, while over-beaten whites turn dry and grainy.
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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Apple Pudding256 recipes
Apple Cake80 recipes
Apple Meringue75 recipes
Dried Apple Cake51 recipes