Why it works: Lemon and butter 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
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the filling
Grate the rinds and squeeze the juice of the lemons.
Separate the yolks from the whites of the eggs.
Beat the yolks with half the sugar, all the butter, lemon juice, and lemon rind until well combined.
Pour the mixture into a pie crust and bake until the pastry is done.
Make the meringue and finish
Beat the egg whites to stiff peaks, then gradually add the remaining sugar.
Spread the meringue smoothly over the pie and bake in a 400°F (200°C) oven for 1 minute to brown the top.
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 + buttertop 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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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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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).
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
- Yolks thicken the filling and whites whip into the meringue that gives structure.
- Butter
- Adds richness and fat that gives the filling a softer, smoother texture.
- Powdered sugar
- Sweetens the filling and helps stabilise the whipped egg whites in the meringue.
- Lemons
- Juice provides acidity and rind adds aroma to the filling.
The step that matters
Beat the egg whites to stiff peaks, then add the sugar gradually. Whites that are under-whipped or sugar added too quickly will not hold a stable foam, so the meringue may weep or collapse during baking.
Swap the lemon
How well each one fits the dish's main ingredients (egg, butter, sugar):
- Vanillafits better
- Lemonthe original
- Raisinfits about as well
- Figfits about as well
Fit is the average pairing score against egg, butter, sugar. 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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