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
Heat the milk in a pot until it is nearly boiling.
In a bowl, beat the eggs and sugar together until well combined.
Pour the egg mixture into the hot milk while stirring continuously.
Continue stirring and taste occasionally until the raw egg flavor is gone.
Remove from heat immediately but keep stirring.
Rest and serve
Let it sit for a few minutes before serving, stirring in one direction to prevent curdling.
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
- Milk
- Provides the liquid base and richness that the custard sets into.
- Eggs
- Thicken the custard as they heat, giving it body and a smooth texture.
- Sugar
- Adds sweetness and helps balance the flavor of the eggs and milk.
The step that matters
Adding the egg mixture to the hot milk. Stirring continuously while pouring in the eggs keeps them from scrambling. Egg proteins set at high heat, so uneven heating can cause curdling and a grainy texture.
“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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