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, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Also mentioned in the method: fish
Directions
Make the sauce
In a bowl, mix the butter, parsley, salt, and cayenne together until well combined.
Gradually add the lemon juice while continuing to mix.
Serve
Serve immediately with steaks, kidneys, or various kinds of fish.
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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Butter + parsleytop 8% of all pairsAroma overlapmoderateMentioned together28,543 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Butter + lemontop 8% of all pairsAroma overlapstrongMentioned together41,197 recipes
Shared aroma: 3-hexenal (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Provides richness and a smooth, creamy body that carries the herbs and seasoning.
- Parsley
- Adds fresh, green aroma and a clean herbal flavour that brightens the butter.
- Lemon juice
- Adds acidity that cuts the richness of the butter and sharpens the overall flavour.
The step that matters
Adding the lemon juice gradually. Lemon juice is acidic and cold butter is an emulsion of fat and water. Adding it slowly while mixing lets it blend evenly into the butter rather than separating or turning the sauce grainy.
“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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