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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare the filling
Preheat the oven to 350°F (175°C).
In a bowl, cream the butter and sugar together.
Add the sweet milk and egg yolks, mixing well.
Stir in the flour and the juice of the lemon.
Bake and finish
Pour the mixture into a pie crust.
Bake for 30‑35 minutes until set.
Whip the egg whites and spread over the pie as frosting.
Return to the oven for a few minutes until the frosting is lightly browned.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Milk + lemontop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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 the filling thicken and set when baked.
- Butter
- Adds fat and richness, giving the filling a tender texture.
- Sugar
- Sweetens the filling and balances the tartness of the lemon.
- Flour
- Thickens the filling so it holds its shape when cut.
- Lemon
- Provides the acidity and bright flavour that defines the pie.
- Egg whites
- Whipped into a frosting that sets and browns on top of the pie.
The step that matters
Return to the oven for a few minutes until the frosting is lightly browned.. Meringue-style frosting can easily over-brown or weep if baked too long. Watch it closely so it browns lightly while the filling stays set underneath.
Swap the lemon
How well each one fits the dish's main ingredients (butter, sugar, milk, egg, flour):
- Vanillafits better
- Raisinfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against butter, sugar, milk, egg, flour. 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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