Why it works: Lemon and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Lemon Pie
Ingredients
Directions
Dissolve cornstarch in a little water.
Boil the boiling water and add the dissolved cornstarch.
Cook until thick.
Stir in the juice and rind of the lemons and sugar.
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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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Lemon and sugar barely smell alike, yet cooks put them together in 53,532 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
- Cornstarch
- Thickens the liquid as it heats, giving the filling its body and set.
- Lemons
- Provide the sour acidity and aroma that define the filling's flavour.
- Sugar
- Sweetens the filling and balances the sharpness of the lemon juice.
The step that matters
Cook until thick. Cornstarch only thickens fully once the mixture reaches a simmer and the starch granules swell and gelatinize. Stopping too early leaves a thin filling, while overcooking can break down the starch and loosen it again.
“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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