Why it works: Lemon and butter are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 41,227 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Lemon Sauce
Ingredients
Directions
The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Mix the sugar and cornstarch thoroughly.
Add boiling water and cook for 8 to 10 minutes, stirring often.
Stir in the lemon rind, lemon juice, and butter until the butter is melted.
If the sauce becomes too thick, add more hot water to reach the desired consistency.
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.
Photo for illustrative purposes only · Contact us to use it
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 + buttertop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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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
- Sugar
- Provides sweetness and, dissolved in the hot liquid, helps shape the sauce's flavour.
- Cornstarch
- Thickens the sauce as it heats, giving it body and a smooth, glossy texture.
- Lemon juice
- Adds acidity and bright citrus flavour that balances the sweetness.
- Butter
- Adds richness and a silky mouthfeel as it melts into the sauce.
The step that matters
Cook the cornstarch mixture while stirring. Cornstarch thickens only when heated, and it can clump or scorch on the bottom if not stirred often. Stirring keeps the starch evenly dispersed so the sauce thickens smoothly rather than lumpily.
Swap the lemon
How well each one fits the dish's main ingredients (butter, sugar):
- Vanillafits better
- Figfits better
- Peachfits better
- Lemonthe original
Fit is the average pairing score against butter, sugar. 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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