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 ↓
Custard Pies
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Make the pastry and line a deep baking pan.
Preheat the oven to 400°F (200°C).
Make the custard
In a bowl, beat the eggs, sugar, and butter until light.
Grate in the nutmeg and add the salt.
Stir in the milk and pour the mixture into the prepared pan.
Bake
Bake in the preheated oven until set, about 30-40 minutes.
Remove from the oven as soon as a knife inserted comes out clean.
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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Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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
- Flour
- Forms the structure of the pastry shell that holds the custard.
- Lard
- Fat that keeps the pastry tender and short by coating the flour.
- Eggs
- Proteins set as they heat, thickening the milk into a sliceable custard.
- Milk
- Provides the liquid base and moisture that the eggs set into custard.
- Sugar
- Adds sweetness and helps the custard brown lightly at the edges.
- Butter
- Adds fat and richness, softening the custard's flavour and texture.
The step that matters
Remove the pie as soon as a knife comes out clean. Egg proteins set as they heat, and overbaking tightens them further, squeezing out liquid so the custard weeps, cracks, or turns grainy. Pulling it when just set keeps it smooth and creamy as it cools.
Swap the nutmeg
How well each one fits the dish's main ingredients (flour, milk, egg, sugar, butter):
- Cinnamonfits better
- Nutmegthe original
- Jalapenofits less well
- Capersfits less well
Fit is the average pairing score against flour, milk, egg, sugar, butter. 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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