Why it works: Potato and parsley are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 2,855 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Mashed Potatoes
Ingredients
Directions
Prepare
Pare the old potatoes and soak them in cold water until ready to cook.
Make the mash
Boil the potatoes in salted water until tender, then drain thoroughly.
Mash the potatoes in the pot with a potato masher.
Mix in a large tablespoon of butter and enough milk to achieve a smooth, dough-like consistency.
Ensure there are no lumps in the mashed potatoes.
Serve
Garnish with parsley 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 their aromas overlap, and how often cooks already put them together.
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Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Old potatoes
- Starchy flesh that breaks down into the fluffy body of the mash.
- Butter
- Adds fat for richness and a smoother, silkier mouthfeel.
- Milk
- Adds moisture so the mash loosens to a smooth, spreadable texture.
The step that matters
Drain the potatoes thoroughly. Excess water dilutes the mash and makes it watery and loose. Draining well lets the starch set into a thick, creamy texture when mashed and mixed with butter and milk.
Swap the parsley
How well each one fits the dish's main ingredients (potato, butter, milk):
- Cinnamonfits better
- Nutmegfits about as well
- Parsleythe original
- Thymefits about as well
Fit is the average pairing score against potato, butter, milk. 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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