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 briskly stir in the egg yolks.
Butter a round deep dish and pour in the custard mixture.
Bake and serve
Place the dish in a pan of boiling water, ensuring the water does not touch the custard.
Let it simmer for 1 to 1.5 hours until firm in the middle.
Keep a few live embers on the lid to prevent steam from falling into the custard.
Serve cold, garnished with chopped macaroons or ratafias around the edge.
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).
-
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).
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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
- Forms the liquid base that gives the custard its body and creamy mouthfeel.
- Sugar
- Sweetens the custard and softens its set slightly.
- Cream
- Adds fat for a richer, smoother texture.
The step that matters
Keep the water from touching the custard and cook gently. Egg proteins set at moderate heat and curdle or turn grainy if overheated. A water bath with the water kept below the custard's level and a gentle simmer lets it firm evenly without weeping or cracking.
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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