Why it works: Potato and parsley match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 2,855 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
The recipe
Ingredients
Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare
Wash and rub the new potatoes with a coarse cloth.
Cook the potatoes
Drop the potatoes into boiling water and boil until tender, checking with a fork.
Make the cream sauce
In a saucepan, heat the cream and butter until hot but not boiling.
Add chopped parsley, pepper, and salt to the cream mixture.
Finish and serve
Drain the potatoes and add the cream and butter mixture.
Let stand over hot water for a minute or two before serving.
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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Potato + parsleytop 3% of all pairsAroma overlapstrongMentioned together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,118 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Cream + buttertop 3% of all pairsAroma overlapstrongMentioned together41,494 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Potato + peppertop 5% of all pairsAroma overlapstrongMentioned together8,303 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + buttertop 6% of all pairsAroma overlapstrongMentioned together6,445 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- New potatoes
- Provide the starchy base that turns tender and absorbs the buttery cream.
- Cream
- Adds richness and a smooth coating that clings to the potatoes.
- Butter
- Adds fat and flavour, giving the sauce a glossy, rich texture.
The step that matters
Heating the cream and butter. Heat them until hot but not boiling. Boiling can split the cream and separate the butter fat, leaving a grainy, oily sauce instead of a smooth one.
Flavor stand-ins for the parsley
How well each one fits the dish's main ingredients (potato, cream, butter, pepper):
- Parsleythe original
- Nutmegabout as good a flavor fit
- Celeryabout as good a flavor fit
Fit is the average pairing score against potato, cream, butter, pepper. 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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