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 ↓
Hashed Browned Potatoes
Ingredients
Directions
Prepare
Heat the drippings in a skillet.
Add the chopped cold boiled potatoes and pat down slightly.
Season with coarse sea salt and dots of butter.
Add chopped onion if desired.
Cook
Cook slowly without stirring for 10 to 15 minutes.
Loosen around the edges and turn or fold over like an omelet.
Serve
Remove to a hot platter and sprinkle with minced parsley.
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.
-
Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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 hash, becoming crisp outside and fluffy inside when pan-fried.
- Drippings
- Provide fat that conducts heat and gives the potatoes a rich, browned crust.
- Butter
- Adds richness and a toasty, nutty flavor as it browns in the pan.
- Onion
- Adds sweetness and aroma as it softens and caramelizes in the fat.
The step that matters
Cook slowly without stirring. Leaving the potatoes undisturbed lets a browned crust form on the bottom. Stirring breaks that crust and keeps the hash soft and pale instead of crisp.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (potato, butter, parsley):
- Chivefits better
- Carrotfits better
- Shallotfits about as well
- Onionthe original
Fit is the average pairing score against potato, butter, parsley. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Potato Croquettes255 recipes
Potato Rolls78 recipes
Potato Chips53 recipes
Sweet Potato Croquettes53 recipes