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-pasty
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat the oven to 350°F (175°C).
Mash the potatoes with milk and a good amount of butter, seasoning with pepper and coarse sea salt.
If using for beef or mutton, add a shredded onion if desired.
Shape and bake
Shape the mashed potatoes into a conical heap on a pie dish.
Press some of the mash through a colander to create a decorative pattern on top.
Dot the surface with small bits of butter.
If the potatoes might overcook, wait to cover with the perforated lid until the meat is partially cooked.
Bake for the same duration as a regular pie of the same size.
Serve
Serve with a napkin or a decorative pie dish cover.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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 filling-free crust, giving a soft, starchy body that holds its shape.
- Milk
- Adds moisture and richness, keeping the mash smooth and creamy.
- Butter
- Adds fat for richness and flavor, and helps the top brown as it melts.
The step that matters
Covering the potatoes with the lid. If the potatoes are covered too early, they may overcook before the meat is ready. Waiting until the meat is partly cooked keeps the mash from drying or overbaking.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (potato, milk, butter, pepper):
- Capsicumfits better
- Asparagusfits about as well
- Tomatofits about as well
- Onionthe original
Fit is the average pairing score against potato, milk, butter, 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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