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
Make the filling
Mix sugar, lemon juice, lemon rind, melted butter, sweet milk, and 2 whole eggs.
Pour mixture into pie crust.
Bake until set, like a custard.
Top and serve
Whip reserved egg whites and spread on top before serving.
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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Butter + eggtop 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Set the filling into a custard-like texture as they bake.
- Sugar
- Sweetens the filling and balances the sharp lemon flavour.
- Lemon juice
- Adds acidity and bright lemon flavour to the filling.
- Melted butter
- Adds richness and a smooth, tender texture to the filling.
The step that matters
Bake until set, like a custard. Egg-thickened fillings firm as proteins coagulate with heat. Underbaking leaves a runny centre, while overbaking can make the custard weep or turn grainy.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, butter, milk, egg):
- Vanillafits better
- Figfits about as well
- Coconutfits about as well
- Lemonthe original
Fit is the average pairing score against sugar, butter, milk, 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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