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.
Bake and serve
Butter a round deep dish and pour in the custard mixture.
Place the dish in a pan of water, ensuring the water does not touch the custard.
Simmer gently for 1 to 1.5 hours until firm in the middle.
Keep a few live embers on the lid to prevent steam from dripping 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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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).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Milk + eggtop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Thicken the custard as they set, giving it a firm, smooth, sliceable texture.
- Milk
- Forms the liquid base, and its milk proteins and fats give the custard body and richness.
- Sugar
- Sweetens the custard and helps keep it tender rather than rubbery.
The step that matters
Simmer gently in the water bath. Egg proteins set at gentle heat, and the water must not touch the custard. Too much heat or direct contact makes the custard curdle, weep or turn grainy instead of smooth and firm.
Swap the orange
The recipe marks orange as optional. How well each one fits the dish's main ingredients (milk, egg, sugar, butter):
- Vanillafits better
- Figfits better
- Coconutfits better
- Orangethe original
Fit is the average pairing score against 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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