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 ↓
French Custards or Creams
Ingredients
Directions
Make the custard
In a saucepan, gently boil the milk with sugar and salt for a few minutes.
Remove from heat and stir the hot milk mixture into the egg yolks briskly.
Butter a round deep dish and pour the custard mixture into it.
Bake and serve
Place the dish in a pan of boiling water, ensuring the water does not touch the custard.
Simmer for 1 to 1.5 hours until the custard is firm in the middle.
Keep a few live embers on the lid of the pan to prevent steam from falling into the custard.
Serve the custard cold, garnished with chopped macaroons or ratafias.
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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Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Milk + orangetop 15% of all pairsSmell alikemoderateCooked together4,696 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
-
Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Set the custard into a firm, sliceable texture as they cook gently.
- Milk
- Provides the liquid base that the yolks thicken into a smooth custard.
- Cream
- Adds richness and a softer, silkier mouthfeel to the custard.
- Sugar
- Sweetens the custard and balances the richness of the yolks and cream.
The step that matters
Keeping the water bath below a boil and the steam off the custard. Egg custard sets gently when heated slowly; boiling water or steam dripping onto the surface can cause a rough, watery or pockmarked texture. The water should not touch the custard, so the dish is heated indirectly.
Swap the orange
The recipe marks orange as optional. How well each one fits the dish's main ingredients (milk, egg, cream, sugar, butter):
- Vanillafits better
- Strawberryfits better
- Coconutfits better
- Orangethe original
Fit is the average pairing score against milk, egg, cream, 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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