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 Cake Pie
Ingredients
Directions
The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Blend together the sugar and butter.
Stir in the egg yolks, milk, flour, and lemon juice and rind.
Fold in the stiffly beaten egg whites.
Bake
Pour the mixture into a pie crust.
Bake in a slow oven at 300°F (150°C) until the top is like sponge cake and the bottom is custard.
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 whites
- Whipped stiff and folded in, they lighten the batter and help the top rise into a sponge-like layer.
- Egg yolks
- They enrich the filling and help set the bottom into a custard.
- Flour
- Gives the batter some body so the filling holds its structure while baking.
- Milk
- Adds moisture and liquid that gives the bottom layer its custard texture.
- Lemon juice and rind
- Provide acidity and bright lemon aroma that balance the sweetness of the sugar.
- Sugar
- Sweetens the filling and helps tenderize the batter.
The step that matters
Folding in the egg whites. Stiffly beaten whites hold air that makes the top light. Overmixing or deflating them during folding makes the cake layer dense instead of sponge-like, so fold gently.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, butter, egg, milk, flour):
- Vanillafits better
- Raisinfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against sugar, butter, egg, milk, 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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