Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓
Boiled Custard
Ingredients
Directions
Make the custard
Beat the 7 egg yolks very light, omitting the whites of 2 eggs.
Gradually mix the yolks with the milk and ½ cup sugar.
Boil the mixture in a dish set into another dish of boiling water.
Add your chosen flavoring.
As soon as it reaches the boiling point, remove it to prevent curdling.
Top and serve
Whip the 2 egg whites until stiff, adding 2 tablespoons of sugar.
Once the custard is cold, heap the whipped egg whites on top.
If serving in cups, garnish with a strawberry or a bit of red jelly.
Set in a cold place until ready to serve.
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 + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Milk + sugartop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + sugartop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Egg yolks
- Thicken the custard as they set with gentle heat, giving it a rich body.
- Milk
- Forms the liquid base of the custard and carries the flavor.
- Sugar
- Sweetens the custard and helps stabilize the whipped egg whites.
- Egg whites
- Whipped to stiff foam that sits on top as a light, airy topping.
The step that matters
Remove the custard as soon as it reaches the boiling point. Egg proteins begin to set and curdle if heated too long or too hot, so removing it promptly keeps the custard 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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