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 ↓
Irish Stew
Ingredients
Directions
Prepare
Cut and trim the mutton cutlets as for Haricot Mutton.
Place the cutlets in a stewpan.
Sprinkle with salt and pepper, then pour in the cold water.
Wash, scrub, and peel the potatoes, then cut them in halves.
Peel the onions carefully.
Simmer
Bring to a boil, then skim the surface.
Reduce heat and let it simmer gently for 1 hour.
Skim occasionally and remove any fat.
Add the onions and potatoes to the stew and simmer for another hour.
Check if the vegetables are tender with a fork.
Serve
Arrange the cutlets in a circle on a hot dish and pour the sauce around, placing the vegetables in the center.
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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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
- Provides the rich meat and fat that flavour the broth as it simmers slowly.
- Potatoes
- Soften during simmering and thicken the stew slightly as their starch releases into the liquid.
- Onions
- Break down gently during simmering, adding sweetness and savoury depth to the sauce.
The step that matters
Simmer gently after boiling. A rolling boil toughens the meat fibres and makes the broth cloudy. Gentle simmering keeps the meat tender and the sauce clear.
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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