Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. 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.
Make the filling
Combine sugar, egg yolks, lemon juice, butter, cream, salt, and flour (mixed with a little water) in a double boiler.
Cook until thick, stirring frequently.
Remove from heat and fold in the beaten egg white.
Assemble and bake
Pre‑bake the pie crust, then fill it with the lemon mixture.
Beat the egg whites until stiff, then add sugar and spread over the filling.
Bake in a 350°F (175°C) oven until the meringue is golden brown.
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 + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Lemon + walnuttop 10% of all pairsSmell alikestrongCooked together2,149 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Walnut + flourtop 12% of all pairsSmell alikemoderateCooked together5,873 recipes
Shared aroma: isobutyraldehyde (malty, 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
- Thicken the lemon filling as they cook and add richness to its custard texture.
- Flour
- Thickens the filling so it sets firm enough to slice cleanly.
- Lemon juice
- Provides the sharp acidity that gives the filling its tart flavour.
- Egg whites
- Whip into a stiff meringue that forms the golden topping and adds lightness.
- Sugar
- Sweetens the filling and helps the beaten whites hold their structure in the meringue.
- Butter
- Adds fat for a smooth, rich filling texture.
The step that matters
Cook the filling until thick. Flour and egg yolks thicken only as the mixture heats, and stirring prevents lumps and scorching. Undercooked filling stays runny and will not set when cooled.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, egg, butter, walnut, cream, flour):
- Vanillafits better
- Raisinfits better
- Coconutfits better
- Lemonthe original
Fit is the average pairing score against sugar, egg, butter, walnut, cream, 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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