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 ↓
Custard Pie
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat the oven to 350°F (175°C).
Line a pie dish with the pie crust, pressing the edges to form a rim.
Make the custard
Beat the eggs with the sugar until well combined.
Add the grated lemon rind, cinnamon, and milk; mix until smooth.
Pour the custard mixture into the crust.
Bake
Bake for about 30 minutes, or until set.
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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Cinnamon + milktop 10% of all pairsSmell alikemoderateCooked together12,655 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Sugar + cinnamontop 10% of all pairsSmell alikelowCooked together30,779 recipes
Shared aroma: guaiacol (smoky, sweet).
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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).
Sugar and cinnamon 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
- Eggs
- Coagulate as they heat, setting the custard into a sliceable structure.
- Sugar
- Sweetens the custard and helps keep the eggs tender while they set.
- Milk
- Provides the liquid base that the eggs set into a smooth, creamy custard.
- Pie crust
- Holds the liquid custard in a shaped pie during baking.
The step that matters
Bake until set. Egg proteins coagulate as the custard heats. Underbaking leaves it runny, while overbaking can make it curdle or weep, so check for a set centre rather than relying on time alone.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, cinnamon, milk):
- Vanillafits better
- Raisinfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against egg, sugar, cinnamon, 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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