Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Potage Parmentier
Ingredients
Directions
The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare
Peel and chop the potatoes.
In a pot, combine potatoes and water; bring to a boil.
Reduce heat and simmer until potatoes are tender, about 20 minutes.
Drain the potatoes, reserving the cooking water.
Finish and serve
Mash the potatoes until smooth, adding reserved water as needed.
Stir in cream and butter; mix well.
Season with salt to taste and serve hot.
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.
Photo for illustrative purposes only · Contact us to use it
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Potato + creamtop 17% of all pairsSmell alikelowCooked together2,481 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Starch that breaks down when cooked and mashed, giving the soup its body and thickness.
- Heavy cream
- Adds fat and richness, producing a smoother, silkier texture.
- Butter
- Adds fat and flavor, rounding out the richness of the cream.
The step that matters
Mash the potatoes until smooth. Overworking cooked potatoes can release excess starch and make them gluey, while under-mashing leaves lumps. Adding the reserved cooking water gradually lets you reach a smooth, pourable texture without thinning it too quickly.
Swap the potato
How well each one fits the dish's main ingredients (cream, butter):
- Potatothe original
- Onionfits about as well
- Leekfits less well
- Chivefits less well
Fit is the average pairing score against cream, butter. Candidates are from the same food group and used in at least 100 recipes.
“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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