Why it works: Milk and egg are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 88,785 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Boiled Custard
Ingredients
Directions
Make the custard
In a bowl, whisk the yolks of the eggs.
In a saucepan, bring the milk to a boil.
Pour the boiling milk over the eggs while stirring continuously.
Strain the mixture back into the saucepan and whisk until it reaches boiling point.
Remove from heat and continue whisking for a few minutes.
Finish
Pour into a bowl, sweeten, and add flavouring to taste.
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 + eggtop 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).
Milk and sugar barely smell alike, yet cooks put them together in 77,875 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
- Yolks thicken the custard as they set with heat, giving it body.
- Milk
- Forms the liquid base that the egg yolks thicken into a smooth custard.
- Sugar
- Adds sweetness and balances the richness of the eggs and milk.
The step that matters
Strain the mixture back into the saucepan and whisk until it reaches boiling point. Egg yolks thicken through gentle heat; overheating or boiling too hard can scramble them into lumps. Whisking constantly spreads the heat evenly and 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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