Why it works: Walnut and lemon match in chemistry and in kitchens. They rank in the top 10% of all ingredient pairs, and cooks put them together in 2,149 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Strawberry 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.
Prepare the filling
Line a pie plate with the pastry crust.
In a bowl, mix the egg yolks, sugar, walnut, and flour until smooth.
Pour the mixture into the crust and bake at 350°F (175°C) until set.
Top and brown
Beat the egg whites until frothy, then add sugar and spread over the baked pie.
Brown the topping under the broiler for a few minutes.
Lemon version
For the lemon version, sprinkle the crust with sugar and flour, fill with strawberries, and add lemon slices before baking.
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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Walnut + lemontop 10% of all pairsSmell alikestrongCooked together2,149 recipes
Shared aroma: 2-nonenal (fatty, green).
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Walnut + flourtop 12% of all pairsSmell alikemoderateCooked together5,873 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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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + lemontop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
Egg and flour barely smell alike, yet cooks put them together in 106,462 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 filling and give it a rich, set custard-like texture when baked.
- Egg whites
- Whip into a foam that forms a light topping which browns under the broiler.
- Sugar
- Sweetens the filling and helps the whipped egg white topping stay stable.
- Flour
- Adds body to the filling so it holds its shape when cut.
- Lemon
- Adds acidity and bright flavor to balance the sweetness.
The step that matters
Beat the egg whites until frothy. Egg whites must be whipped to a stable foam before sugar is added; under-whipped or greasy whites will not hold a peak and the topping can weep or flatten under the broiler.
Swap the walnut
How well each one fits the dish's main ingredients (egg, sugar, flour, lemon):
- Almondfits better
- Milletfits better
- Pistachiofits better
- Walnutthe original
Fit is the average pairing score against egg, sugar, flour, 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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