Why it works: Onion and potato 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 ↓
Mutton Potato Pie
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Trim mutton cutlets and season with salt and pepper.
Layer the cutlets in a pie dish with sliced onion and potato between each layer.
Fill the dish with stock.
Bake and serve
Cover with a perforated lid and top with 1.5 inches of mashed potato.
Bake at 400°F (200°C) for 1 hour and 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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Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mutton + peppertop 16% of all pairsSmell alikelowCooked together5,442 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Mutton + oniontop 18% of all pairsSmell alikelowCooked together4,531 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mutton cutlets
- Provide the main meat, which becomes tender and flavourful during the long slow braise.
- Sliced potato
- Adds starch and body, softening into the filling and thickening the juices.
- Sliced onion
- Contributes sweetness and savoury depth as it softens and blends into the stock.
- Stock
- Supplies moisture that cooks the meat and forms the gravy under the crust.
- Mashed potato
- Forms a soft topping that seals in moisture and browns in the oven.
The step that matters
Cover with a perforated lid and top with mashed potato. The perforations let steam escape so the filling does not become watery or boil under the topping, while the potato layer stays intact and can brown.
Swap the onion
How well each one fits the dish's main ingredients (mutton, pepper, potato):
- Carrotfits better
- Capsicumfits better
- Tomatofits about as well
- Onionthe original
Fit is the average pairing score against mutton, pepper, potato. 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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