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 Brown Potatoes
Ingredients
Directions
Prepare
Cut the potatoes into very small dice.
Heat the lard in a frying pan.
Add the sliced onion and cook until light brown.
Cook
Add the butter and, when melted, add the diced potatoes.
Press the potatoes down lightly.
Sift the flour and seasoning over the potatoes.
Pour the cream on top.
Place the potatoes over a hot fire for a few minutes.
Reduce the heat to low and cook for 15 to 20 minutes.
Fold the potatoes.
Turn the folded potatoes onto a hot serving plate.
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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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
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 dish and crisp on the surface while staying tender inside.
- Flour
- Absorbs moisture and helps bind the potatoes into a cohesive cake.
- Cream
- Adds moisture and richness that softens the potatoes and helps them cook through.
- Lard
- Conducts heat and fat for frying, promoting browning on the potato surface.
- Onion
- Adds sweetness and savory aroma as it browns in the fat.
The step that matters
Reduce the heat to low and cook for 15 to 20 minutes. Starting with a hot fire browns the bottom, but low heat afterward lets the potatoes cook through without scorching. Too high a heat for the full time would burn the crust before the interior is tender.
Swap the onion
How well each one fits the dish's main ingredients (potato, butter, flour, cream, pepper):
- Chivefits better
- Spinachfits about as well
- Leekfits about as well
- Onionthe original
Fit is the average pairing score against potato, butter, flour, cream, pepper. 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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