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 the mutton into handsome pieces.
Make the stew
In a stew pan, heat half the fat with the onions and stir for 8 to 10 minutes over high heat.
Add the mutton, sprinkle with flour, salt, and pepper, and stir for 10 minutes.
Pour in the boiling water and simmer for 1 hour.
Peel the potatoes and add them to the stew.
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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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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Potato + flourtop 15% of all pairsSmell alikemoderateCooked together5,355 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mutton + peppertop 16% of all pairsSmell alikelowCooked together5,442 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Neck of mutton
- Provides the main meat, whose connective tissue softens into tender bites during long simmering.
- Onions
- Soften and sweeten as they cook in the fat, adding depth to the broth.
- Potatoes
- Absorb the savory broth and thicken the stew as their starch releases during cooking.
- Flour
- Coats the meat and thickens the cooking liquid into a richer, cohesive sauce.
The step that matters
Pour in the boiling water and simmer for 1 hour. Starting with boiling water and keeping the stew at a gentle simmer helps the mutton become tender without toughening. Boiling hard can make the meat firm and cloudy.
Swap the onion
How well each one fits the dish's main ingredients (mutton, potato, pepper, flour):
- Carrotfits better
- Spinachfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against mutton, potato, pepper, flour. 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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