Why it works: Milk and corn are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 6,955 recipes. Both carry hexanal, which smells green, grassy. The science ↓
Boiled Custard
Ingredients
Directions
Make the custard
Heat the milk in a double boiler until it reaches the boiling point.
In a bowl, beat the eggs, sugar, and corn starch together.
Slowly pour the egg mixture into the boiling milk, stirring gently to prevent sticking.
When the mixture is almost boiling and thick like cream, remove it from the heat.
Cool and serve
Pour the custard into a bowl to cool.
Once cold, stir in the beaten egg whites and serve very cold.
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 + corntop 10% of all pairsSmell alikemoderateCooked together6,955 recipes
Shared aroma: hexanal (green, grassy).
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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).
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Sugar + corntop 21% of all pairsSmell alikelowCooked together7,168 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
- Thicken the custard as they cook and set, and the whites add lightness when folded in.
- Milk
- Forms the liquid base that the eggs thicken into a creamy custard.
- Sugar
- Sweetens the custard and balances the richness of the eggs and milk.
- Corn starch
- Stabilises the custard, helping it thicken smoothly and resist curdling.
The step that matters
Adding the egg mixture to the hot milk. Pouring the eggs in too fast or letting the custard boil can scramble the egg proteins, leaving lumps. Stirring gently while adding the eggs keeps the mixture smooth as it thickens.
“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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