Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 14,036 recipes mention both. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
The recipe
Ingredients
Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the beans
Wash the green haricot beans.
Boil the beans in salted water until nearly tender.
Make the herb butter
In a separate pan, mix butter with chopped parsley and chives.
Add salt, pepper, and lemon juice or vinegar to the butter mixture.
Combine and serve
Combine the butter mixture with the drained beans and serve.
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 aroma chemistry they share, and how many recipes mention both.
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Parsley + lemontop 1% of all pairsAroma overlapstrongMentioned together14,036 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,118 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Pepper + lemontop 2% of all pairsAroma overlapstrongMentioned together27,039 recipes
Shared aroma: 2-nonenal (fatty, green).
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Beans + chivetop 4% of all pairsAroma overlapstrongMentioned together180 recipes
Shared aroma: guaiacol (smoky, sweet).
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Parsley + chivetop 4% of all pairsAroma overlapstrongMentioned together2,150 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Green haricot beans
- Form the main body of the dish and carry the butter's flavour.
- Butter
- Adds fat and richness, coating the beans and carrying the herbs.
- Fresh parsley
- Contributes fresh, green aroma and flavour to the butter.
- Fresh chives
- Adds a mild onion-like aroma and freshness to the butter.
- Lemon juice or vinegar
- Adds acidity that brightens the rich butter and balances its fat.
The step that matters
Boil the beans until nearly tender. Beans cooked past nearly tender lose their bright green colour and firm texture, and they keep softening after draining. Stopping at nearly tender leaves them crisp enough to hold up when tossed in the butter.
Flavor stand-ins for the beans
How well each one fits the dish's main ingredients (butter, parsley, chive, pepper, lemon):
- Chickpeabetter flavor fit
- Beansthe original
- Walnutabout as good a flavor fit
- Peasabout as good a flavor fit
Fit is the average pairing score against butter, parsley, chive, pepper, lemon. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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