Why it works: Cucumber and parsley match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,564 recipes. Both carry trans-2-hexenal, which smells green, leafy. The science ↓
Modern Cookery
Ingredients
Directions
Cook the cucumbers in butter until tender.
Add salt and white pepper to taste.
Stir in finely-minced parsley.
Thicken the sauce with the yolks of 2 or 3 eggs.
Optionally, add flour after the vegetables have stewed in the butter.
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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Cucumber + parsleytop 7% of all pairsSmell alikestrongCooked together1,564 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Cucumber + flourtop 13% of all pairsSmell alikemoderateCooked together2,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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White pepper + parsleytop 14% of all pairsSmell alikelowCooked together1,451 recipes
Shared aroma: myrcene (balsamic, herbaceous).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Cucumbers
- Form the main body of the sauce, softening into a tender vegetable base.
- Egg yolks
- Thicken the sauce and give it a rich, smooth body as they set with gentle heat.
- Butter
- Cooks the cucumbers and adds richness and a silky mouthfeel to the sauce.
- Flour
- Optional thickener that stabilises the sauce's body after the vegetables have stewed.
The step that matters
Thicken with egg yolks. Egg yolks thicken through gentle heat; if the sauce gets too hot, they can scramble and turn grainy. Keep the heat low and stir steadily once the yolks go in.
Swap the white pepper
How well each one fits the dish's main ingredients (cucumber, parsley, egg, butter, flour):
- Capersfits better
- Tarragonfits better
- Dillfits better
- White pepperthe original
Fit is the average pairing score against cucumber, parsley, egg, butter, flour. 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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