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 ↓
Cream Filling
Ingredients
Directions
Prepare
In a bowl, stir together the eggs, sugar, flour, and butter.
In a saucepan, bring the milk to a boil.
Make the cream
Add the egg mixture to the boiling milk and cook until it thickens.
Remove from heat and let it cool.
Flavor as desired and spread.
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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Butter + flourtop 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).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour 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
- Their proteins set when heated, helping the cream thicken.
- Flour
- Its starch swells in hot liquid, thickening the cream.
- Butter
- Adds fat for richness and a smooth, silky mouthfeel.
- Sugar
- Adds sweetness and balances the richness of the eggs and butter.
- Milk
- Forms the liquid base that the eggs and flour thicken into a cream.
The step that matters
Adding the egg mixture to the boiling milk. Egg proteins can scramble and curdle if heated too quickly or left unstirred. Whisking the mixture in steadily and cooking gently until it thickens keeps the cream smooth.
“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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