Why it works: Lemon and milk are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 19,053 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Farm Custard
Ingredients
Directions
Make the custard
In a small saucepan, combine egg yolks, sugar, lemon peel, and salt. Mix well.
Add milk and stir continuously over low heat until thick and smooth, but do not let it boil.
Remove from heat and transfer to a basin to cool, stirring occasionally.
Finish and serve
If desired, pass through a sieve for a nice appearance.
Serve in glasses or cups with fresh or stewed fruit, or flavor with essence, brandy, or rum.
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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Lemon + milktop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + milktop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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 milk as they set with gentle heat, giving the custard its body.
- Milk
- Forms the liquid base that the egg yolks thicken into a smooth custard.
- Sugar
- Sweetens the custard and balances the richness of the yolks and milk.
The step that matters
Cooking the custard over low heat without boiling. Egg yolk proteins set as they warm, and if the mixture gets too hot or boils, they tighten and curdle, leaving a grainy texture. Low heat and constant stirring keep it smooth and thick.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, milk):
- Vanillafits better
- Figfits about as well
- Raisinfits about as well
- Lemonthe original
Fit is the average pairing score against egg, sugar, milk. Candidates are from the same food group and used in at least 100 recipes.
“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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