Why it works: Arrowroot and lemon match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 553 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Lemon Sauce
Ingredients
Directions
Make the sauce
Mix arrowroot or corn-starch with sugar.
Add boiling water and cook for 20 minutes.
Stir in lemon rind, juice, and butter.
Serve
Serve hot.
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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Arrowroot + lemontop 4% of all pairsSmell alikestrongCooked together553 recipes
Shared aroma: coumarin (sweet, hay).
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Lemon + buttertop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Arrowroot + sugartop 20% of all pairsSmell alikemoderateCooked together1,073 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
Sugar and lemon 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
- Arrowroot or corn-starch
- Thickens the sauce as it cooks, giving it body and a smooth texture.
- Sugar
- Sweetens the sauce and balances the tartness of the lemon.
- Lemon rind and juice
- Supplies bright acidity and aroma that flavour the sauce.
- Butter
- Adds richness and a smooth, glossy finish to the sauce.
The step that matters
Add boiling water and cook for 20 minutes. Starch thickens only once it is hot enough to swell and gelatinise, so the mixture must be kept at a proper simmer long enough for it to thicken fully and lose any raw starch taste.
Swap the arrowroot
How well each one fits the dish's main ingredients (sugar, lemon, butter):
- Arrowrootthe original
- Shallotfits about as well
- Leekfits about as well
- Sweet potatofits about as well
Fit is the average pairing score against sugar, lemon, butter. 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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