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 ↓
Irish Stew
Ingredients
Directions
Prepare
Cut the mutton into neat slices.
Peel and cut the onions into rings.
Cut the parboiled potatoes into slices or leave them whole as preferred.
Simmer
Place the meat, onions, hot water, salt, and pepper in a saucepan.
Simmer gently for one hour, skimming regularly.
Place the potatoes on top of the meat.
Simmer slowly for 30 minutes, stirring occasionally to prevent burning.
Serve
Once the meat is tender, arrange it in the center of a hot dish with the onions.
Surround it with the potatoes.
Pour the gravy over the dish.
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.
Photo for illustrative purposes only · Contact us to use it
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).
-
Onion + peppertop 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
- Its fat and connective tissue soften during long simmering, making the meat tender and flavourful.
- Potatoes
- Starch thickens the cooking liquid slightly and absorbs the savoury gravy as they cook.
- Onions
- Sweetness and aroma build as they soften in the broth, adding depth to the gravy.
The step that matters
Simmer gently and skim. Keeping the liquid at a gentle simmer, not a rapid boil, keeps the meat tender and stops fat and impurities from clouding the gravy. Regular skimming removes the foam that rises during cooking.
Swap the onion
How well each one fits the dish's main ingredients (mutton, potato, pepper):
- Carrotfits better
- Capsicumfits better
- Tomatofits about as well
- Onionthe original
Fit is the average pairing score against mutton, potato, 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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