Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓
Lemon Tart
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 350°F (175°C).
Line a pudding dish with short pastry.
Make the filling
Grate the thin yellow rind from the lemon and mix it with the bread crumbs.
Add the lemon juice, sugar, and egg yolks to the mixture and mix well.
Stir in the cream until combined.
Whip the egg whites to stiff peaks and gently fold them into the mixture.
Bake
Pour the mixture into the lined dish and bake for 30 minutes.
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.
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Bread + eggtop 13% of all pairsSmell alikemoderateCooked together22,662 recipes
Shared aroma: (e)-2-octenal (fatty, green).
-
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).
-
Bread + lemontop 20% of all pairsSmell alikemoderateCooked together8,445 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
- Bread crumbs
- Provides bulk and body so the filling sets into a soft, sliceable custard.
- Egg yolks
- Thicken and set the filling while adding richness and a smooth texture.
- Egg whites
- Whipped to stiff peaks, they add lightness and help the filling rise and stay airy.
- Cream
- Adds fat and moisture, making the filling richer and more tender.
- Sugar
- Sweetens the filling and balances the sharpness of the lemon.
- Lemon
- Rind and juice supply aroma and acidity that brighten the filling.
The step that matters
Fold in the egg whites gently. Whipped egg whites trap air that gives lightness. Stirring them vigorously knocks out the air, so the tart ends up denser and less airy.
Swap the lemon
How well each one fits the dish's main ingredients (bread, sugar, cream, egg):
- Vanillafits better
- Raspberryfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against bread, sugar, cream, 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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