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 ↓
Richer Custard
Ingredients
Directions
Boil the milk with lemon peel and cinnamon until it is flavored.
In a separate bowl, mix the cream and beaten egg yolks.
Once the milk is flavored, sweeten it to your liking.
Pour the sweetened milk into the cream mixture, stirring well.
Simmer the custard until it thickens, stirring continuously in one direction. Do not let it boil.
Adjust seasoning as needed.
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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Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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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).
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
- Egg yolks
- Thicken the custard as they set with gentle heat, giving it a rich body.
- Cream
- Adds fat and richness, giving the custard a smooth, silky texture.
- Milk
- Forms the liquid base that the yolks thicken into a custard.
- Sugar
- Sweetens the custard and balances the richness of the cream and yolks.
The step that matters
Simmer the custard without boiling. Egg yolks thicken through gentle heat, around 180°F, and curdle if they boil. Constant stirring spreads heat evenly and prevents lumps and scorching on the base of the pan.
Swap the lemon
How well each one fits the dish's main ingredients (milk, cinnamon, cream, egg, sugar):
- Vanillafits better
- Raisinfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against milk, cinnamon, cream, egg, 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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