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 ↓
Cup Custard
Ingredients
Directions
The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Make the custard
Heat the milk in a saucepan until warm.
In a bowl, beat the eggs until light and fluffy.
Add the sugar and nutmeg to the milk.
Mix in the beaten eggs.
Pour the mixture into cups and place them in a baking pan filled with hot water.
Bake in a slow oven at 300°F (150°C) until set.
Make the second custard
For the second custard, combine the eggs, salt, sugar, flour, and butter in a bowl.
Beat the mixture until light and creamy.
Add nutmeg or flavoring and milk as desired.
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.
Photo for illustrative purposes only · Contact us to use it
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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Nutmeg + flourtop 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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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 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
- Eggs
- Coagulate as they heat, giving the custard its set structure.
- Milk
- Forms the liquid base that the eggs set into a tender custard.
- Sugar
- Adds sweetness and softens the set texture slightly.
- Flour
- Thickens the mixture and adds body to the second custard.
- Butter
- Adds fat for richness and a smoother mouthfeel.
The step that matters
Bake in a slow oven in a water bath until set. Egg proteins set gradually as they heat. Baking slowly in hot water moderates the heat around the cups. Overbaking pushes the eggs past their setting point, causing curdling, weeping, or a grainy texture.
Swap the nutmeg
How well each one fits the dish's main ingredients (milk, egg, sugar, flour, butter):
- Cinnamonfits better
- Nutmegthe original
- Jalapenofits less well
- Capersfits less well
Fit is the average pairing score against milk, egg, sugar, flour, 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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