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 ↓
Potato Pie
Ingredients
Directions
Make the topping
Mash the potatoes with the butter, seasoning, and flour.
Assemble and bake
Place the sliced meat in a pie dish and add a little water for gravy.
Boil the onions, mince them finely, and sprinkle over the meat.
Cover with the mashed potatoes, smoothing it neatly with a knife.
Bake until deep brown.
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 + 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).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Flour and butter 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 mashed topping that gives the pie its body and soft texture.
- Meat
- Provides the main savoury flavour and substance of the filling.
- Butter
- Adds richness and fat to the mash and helps the topping brown.
- Flour
- Thickens the juices and gravy so the filling holds together.
- Onions
- Add savoury aroma and flavour to the meat layer.
The step that matters
Smoothing the mashed potato topping. An even, smooth layer seals in the meat and gravy and bakes to a uniform brown. Gaps or thick spots can dry out or burn while others stay pale.
Swap the onion
How well each one fits the dish's main ingredients (potato, meat, pepper, flour, butter):
- Chivefits better
- Shallotfits about as well
- Asparagusfits about as well
- Onionthe original
Fit is the average pairing score against potato, meat, pepper, flour, 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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