Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Lemon Pie
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the filling
Preheat the oven to 350°F (175°C).
In a bowl, mix the lemon rind, lemon juice, egg yolks, butter, sugar, and sweet milk until smooth.
Pour the mixture into a pie crust and bake until set.
Make the meringue and finish
Whip the egg whites until soft peaks form, then gradually add 6 ounces of sugar until stiff peaks form.
Spread the meringue on top of the baked pie and brown slightly 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 + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Lemon + milktop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
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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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Thicken the filling as they set, giving it a rich, custard-like body.
- Lemon juice
- Provides the sharp acidity that balances the sweetness of the filling.
- Butter
- Adds fat for a smoother, richer texture in the filling.
- Egg whites
- Whip into a foam that forms the light, stable meringue topping.
- Sugar
- Sweetens the filling and stabilizes the whipped egg white meringue.
The step that matters
Whip the egg whites and add sugar gradually. Adding sugar slowly to whipped egg whites helps them form a stable, glossy foam. Adding it too fast can prevent full volume and cause the meringue to weep or collapse.
Swap the lemon
How well each one fits the dish's main ingredients (egg, butter, sugar, milk):
- Vanillafits better
- Figfits about as well
- Coconutfits about as well
- Lemonthe original
Fit is the average pairing score against egg, butter, sugar, milk. 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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