Why it works: Corn and walnut match in chemistry and in kitchens. They rank in the top 9% of all ingredient pairs, and cooks put them together in 349 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Lemon Pie
Ingredients
Directions
Make the filling
Combine hot water and corn starch in a saucepan, stirring until thickened.
Add butter, egg yolks, sugar, lemon rind, and lemon juice; boil until thick.
Pour the mixture into a pre-baked pie crust.
Make the meringue and finish
Beat egg whites until soft peaks form.
Gradually add sugar to the egg whites until stiff peaks form.
Spread meringue over the pie filling.
Return the pie to the oven to 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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Corn + walnuttop 9% of all pairsSmell alikestrongCooked together349 recipes
Shared aroma: 2-nonenal (fatty, green).
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Walnut + lemontop 10% of all pairsSmell alikestrongCooked together2,149 recipes
Shared aroma: 2-nonenal (fatty, green).
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Corn + lemontop 13% of all pairsSmell alikemoderateCooked together1,927 recipes
Shared aroma: 2-nonenal (fatty, green).
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Corn + buttertop 14% of all pairsSmell alikemoderateCooked together7,345 recipes
Shared aroma: 2,3-pentanedione (butter, sweet).
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Walnut + buttertop 15% of all pairsSmell alikemoderateCooked together6,832 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Corn starch
- Thickens the hot water into a smooth, set filling base.
- Egg yolks
- Enrich and thicken the filling as it cooks, adding richness and body.
- Lemon juice
- Provides the sharp acidity that defines the lemon flavour.
- Egg whites
- Whip into a foam that forms the structure of the meringue topping.
- Sugar
- Sweetens the filling and, whipped with the whites, stabilises the meringue.
The step that matters
Boil the filling until thick. Egg yolks thicken only when fully cooked, and starch needs boiling to reach full thickening. Undercooked filling stays runny and can weep under the meringue.
Swap the walnut
How well each one fits the dish's main ingredients (corn, butter, egg, sugar, lemon):
- Almondfits better
- Walnutthe original
- Pistachiofits about as well
- Beansfits about as well
Fit is the average pairing score against corn, butter, egg, sugar, lemon. 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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