Why it works: Lemon and cinnamon match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 7,950 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Boiled Custard
Ingredients
Directions
Infuse the milk
Boil the milk with the lemon peel and cinnamon for 15 minutes to infuse.
Strain the mixture.
Make the custard
Beat the egg yolks with sugar in a bowl.
Pour the boiled milk into the egg mixture, stirring continuously.
Return the mixture to the saucepan.
Stir over low heat until it thickens, being careful not to boil.
Cool and serve
Cool and serve around the pudding.
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 + cinnamontop 7% of all pairsSmell alikestrongCooked together7,950 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Milk + cinnamontop 10% of all pairsSmell alikemoderateCooked together12,655 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Cinnamon + sugartop 10% of all pairsSmell alikelowCooked together30,779 recipes
Shared aroma: guaiacol (smoky, sweet).
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Milk + lemontop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Cinnamon and sugar barely smell alike, yet cooks put them together in 30,779 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
- Forms the liquid base that the egg yolks thicken into custard.
- Egg yolks
- Thicken the custard as they set on gentle heat, giving it a smooth, rich texture.
- Sugar
- Adds sweetness and balances the richness of the egg yolks and milk.
The step that matters
Stir over low heat until it thickens, being careful not to boil. Egg yolks begin to set at moderate temperatures and can curdle or scramble if overheated. Gentle, constant stirring over low heat lets the custard thicken smoothly, and boiling risks a grainy texture.
Swap the lemon
How well each one fits the dish's main ingredients (milk, egg, cinnamon, sugar):
- Vanillafits better
- Raisinfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against milk, egg, cinnamon, sugar. 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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