Why it works: Butter and parsley 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
Make the butter
In a bowl, mix the butter, parsley, pepper, salt, and lemon juice until well combined, but do not overmix.
Pack the mixture into small jars, leaving ½ inch of space at the top.
Seal and store
Fill the space with clarified butter or drippings.
Seal the jars tightly and store for later use.
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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Butter + parsleytop 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
- Butter
- Provides the rich fat base that carries the flavours and gives a smooth, spreadable texture.
- Parsley
- Adds fresh, green aroma and a mild herbal flavour to the butter.
- Lemon juice
- Adds acidity that brightens the rich butter and balances its fattiness.
The step that matters
Mix only until combined. Overworking butter warms it, which can make the mixture greasy, loose and prone to separating. Mixing just until combined keeps the butter firm and spreadable and keeps the parsley evenly distributed.
“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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