Why it works: Vanilla and milk 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 ↓
Custard Sauce
Ingredients
Directions
Prepare
Boil the milk in a clean saucepan.
Beat the eggs and sugar together in a bowl.
Make the custard
Pour the boiling milk onto the egg mixture and whisk well.
Return the mixture to the saucepan and whisk until the custard thickens, without boiling.
Remove from heat and add the vanilla essence.
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.
Photo for illustrative purposes only · Contact us to use it
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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Vanilla + milktop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Vanilla + sugartop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Vanilla + brandytop 11% of all pairsSmell alikemoderateCooked together806 recipes
Shared aroma: beta-damascenone (apple, rose).
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Milk + brandytop 15% of all pairsSmell alikemoderateCooked together3,738 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
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Egg + brandytop 17% of all pairsSmell alikemoderateCooked together7,340 recipes
Shared aroma: acetoin (butter, cream).
Vanilla and sugar 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
- Eggs
- Proteins thicken the custard as they gently heat, giving it body and a set texture.
- Milk
- Forms the liquid base that the egg proteins thicken into a smooth sauce.
- Castor sugar
- Adds sweetness and balances the savoury richness of the eggs and milk.
- Vanilla essence
- Adds a warm, aromatic flavour to the finished custard.
The step that matters
Keep the custard below boiling while it thickens. Egg proteins set as they warm, but if the custard gets too hot they tighten too far, curdle and turn grainy. Whisking constantly while it thickens spreads the heat evenly and keeps it 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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