Why it works: Butter and lemon are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 41,227 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Lemon Pie
Ingredients
Directions
Make the filling
Beat the eggs in a double boiler.
Stir in the sugar, butter, lemon juice, lemon rind, and salt.
Gradually add the cold water and stir until thick like drop batter.
Bake and fill the crust
Bake the pie crust until well pricked.
Once cool, pour the mixture into the crust.
Make and brown the meringue
For the meringue, beat the egg whites until stiff.
Beat in the powdered sugar and fold in the additional tablespoon of powdered sugar.
Spread the meringue over the pie and brown in the oven.
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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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Sugar and lemon 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
- Thicken the filling as they cook and set it into a smooth custard.
- Egg whites
- Whipped into stiff foam that forms the light, airy meringue topping.
- Sugar
- Sweetens the filling and helps balance the sharpness of the lemon.
- Lemon juice
- Adds acidity and bright lemon flavour to the filling.
- Butter
- Adds richness and a smoother, silkier texture to the filling.
The step that matters
Gradually add the cold water and stir until thick like drop batter. Eggs thicken when heated, so the filling must be cooked gently and stirred constantly. Adding water slowly keeps it smooth and prevents lumps and curdling, and the filling sets properly once cooled.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, butter):
- Vanillafits better
- Lemonthe original
- Raisinfits about as well
- Figfits about as well
Fit is the average pairing score against egg, sugar, butter. 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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