Why it works: Lemon and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Lemon Tarts
Ingredients
Directions
Prepare
Mix the lemon juice, grated rind, sugar, eggs, and sponge cake crumbs until smooth.
Line twelve tart pans with puff pastry.
Bake
Pour the mixture into the lined pans.
Bake until the crust is golden and done.
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 + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Lemon and sugar 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
- Eggs
- Set the filling into a custard-like texture as they cook.
- Sugar
- Sweetens the filling and balances the sharpness of the lemon.
- Lemon juice and rind
- Provide the tart acidity and bright lemon aroma.
- Sponge cake crumbs
- Add body to the filling, helping it hold together as it bakes.
- Puff pastry
- Forms the crisp, flaky shell that holds the filling.
The step that matters
Bake until the crust is golden and done. Eggs in the filling set as they heat, and the pastry must brown fully to become crisp. Underbaking leaves a runny filling and soggy crust, while overbaking can make the eggs curdle and dry out.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, egg):
- Vanillafits better
- Raisinfits about as well
- Lemonthe original
- Datesfits less well
Fit is the average pairing score against sugar, egg. 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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