Why it works: Cinnamon and peach match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 625 recipes. Both carry methyl cinnamate, which smells strawberry. The science ↓
Boiled Custards
Ingredients
Directions
Make the custard
In a saucepan, boil the milk with lemon peel and cinnamon.
Once the milk is flavored, sweeten it to taste.
In a bowl, mix the cream and beaten egg yolks.
Pour the milk into the cream mixture, stirring well.
Simmer the custard until it thickens, stirring continuously in one direction. Do not let it boil.
Finish and serve
Add peach water and brandy or ratafia before serving.
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.
-
Cinnamon + peachtop 6% of all pairsSmell alikestrongCooked together625 recipes
Shared aroma: methyl cinnamate (strawberry).
-
Lemon + cinnamontop 7% of all pairsSmell alikestrongCooked together7,950 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Milk + cinnamontop 10% of all pairsSmell alikemoderateCooked together12,655 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Milk + peachtop 10% of all pairsSmell alikemoderateCooked together781 recipes
Shared aroma: phellandrene (minty).
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, and add richness.
- Heavy cream
- Adds fat and richness, giving the custard a smooth, velvety body.
- Milk
- Forms the liquid base that the yolks thicken into custard.
- Sugar
- Sweetens the custard to taste.
The step that matters
Simmer without boiling. Egg yolks thicken as they heat, but past about 180°F they scramble and curdle. Stirring steadily over gentle heat keeps the custard smooth and lets it thicken evenly.
Swap the lemon
How well each one fits the dish's main ingredients (milk, cinnamon, cream, egg, sugar, peach, brandy):
- Vanillafits better
- Apricotfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against milk, cinnamon, cream, egg, sugar, peach, brandy. 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.
More boiled custard recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Lemon Cake228 recipes
Lemon Ice147 recipes
Lemon Sherbet103 recipes
Cinnamon Rolls71 recipes