Why it works: Lemon and corn are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 1,927 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Lemon Filling
Ingredients
Directions
Make the filling
In a saucepan, combine boiling water, grated lemon, and sugar.
Boil the mixture, then add corn starch dissolved in a little water.
Continue boiling until the mixture thickens.
Finish
Allow to cool before using.
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 + corntop 13% of all pairsSmell alikemoderateCooked together1,927 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + corntop 21% of all pairsSmell alikelowCooked together7,168 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
- Corn starch
- Thickens the filling as it boils, giving it a smooth, sliceable body.
- Sugar
- Sweetens the filling and balances the sharpness of the lemon.
- Lemon
- Adds bright acidity and aroma from its zest and juice.
The step that matters
Adding the corn starch slurry while boiling. Starch must be fully boiled to swell and thicken. Adding it to a mixture that is not boiling, or stirring too little, can leave lumps or a thin filling that does not set properly as it cools.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, corn):
- Vanillafits better
- Coconutfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against sugar, corn. 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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