Why it works: Parsley and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and 28,543 recipes mention both. Both carry trans-2-hexenal, which smells green, leafy. The science ↓
The recipe
Ingredients
Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the parsley
Wash the parsley in plenty of water, remove the stalks, and mince it.
Secure the parsley in a clean cloth and dip it into cold water two or three times, then wring out the water.
Make the butter
In a basin, combine the butter, parsley, salt, pepper, and lemon juice.
Work the mixture near the fire until it reaches the consistency of thick cream.
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 + buttertop 8% of all pairsAroma overlapmoderateMentioned together28,543 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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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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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
- Fresh butter
- Forms the rich base that carries the herbs and gives the butter its smooth, creamy body.
- Parsley
- Adds fresh, green flavour and colour to the butter.
- Lemon juice
- Adds acidity that brightens the rich butter and balances its fat.
The step that matters
Work the mixture near the fire until it reaches the consistency of thick cream. Gentle warmth softens the butter so it blends evenly with the parsley and lemon juice. Too much heat melts it and separates the fat, while too little leaves the mixture grainy and unevenly mixed.
“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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