Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Stewed Potatoes
Ingredients
Directions
Prepare and cook the potatoes
Soak the quartered potatoes in cold water.
Boil the potatoes until almost done.
Drain the water.
Add milk, butter, and chopped parsley, and cook for a while longer.
Thicken with flour mixed with cold water or milk, then stir.
Remove from heat.
Make the onion base
In a separate pan, heat drippings or butter.
Sauté the onion until soft.
Add the salted potatoes to the onion.
Cover and stew slowly until soft, stirring occasionally.
Finish and serve
In the same pan, brown a spoonful of flour in a little butter or drippings.
Add soup stock, vinegar, and chopped parsley.
Pour over the potatoes and boil once.
Serve.
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 + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Form the bulk of the stew and soften into a tender, starchy body.
- Milk
- Adds creaminess and moisture to the stew.
- Flour
- Thickens the liquid as its starch swells when heated.
- Onion
- Softens and sweetens as it cooks, adding aroma to the base.
- Butter
- Adds fat for richer flavor and a smoother texture.
The step that matters
Thicken with flour mixed with cold liquid. Starch clumps when dry flour hits hot liquid. Mixing it with cold water or milk first lets the granules disperse, so the stew thickens smoothly without lumps.
Swap the onion
How well each one fits the dish's main ingredients (potato, milk, butter, parsley, flour):
- Chivefits better
- Shallotfits better
- Leekfits better
- Onionthe original
Fit is the average pairing score against potato, milk, butter, parsley, flour. 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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