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 in the steps is the modern equivalent, not the book's own figure.
Prepare
Line a pudding dish with short pastry.
Grate the yellow rind from the lemon and mix it with the bread crumbs.
Make the filling
Add the lemon juice, sugar, and egg yolks; mix well.
Stir in the cream.
Whip the egg whites to stiff peaks and gently fold them into the mixture.
Bake
Fill the pastry with the mixture and bake in a moderate oven (350°F/175°C) 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.
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
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).
-
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
- Egg yolks
- Add richness and help set the filling as it bakes.
- Egg whites
- Whipped and folded in, they add lightness and airy texture to the filling.
- Lemon juice
- Provides the sharp acidity that gives the tart its characteristic flavor.
- Sugar
- Sweetens the filling and balances the lemon's acidity.
- Cream
- Adds moisture and richness, giving the filling a smooth, soft texture.
- Bread crumbs
- Absorb liquid and give the filling body and a tender structure.
The step that matters
Folding in the egg whites. Whipped whites hold air, and overmixing or stirring vigorously deflates them, losing the light texture. Fold gently so the mixture stays 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.
More lemon tart 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
Bread Pudding153 recipes
Lemon Ice147 recipes
Lemon Sherbet103 recipes