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
In a stew pan, place the mutton chops.
Sprinkle the chops with black pepper, coarse sea salt, and the chopped onion.
Layer the halved potatoes over the meat.
Add another layer of chops and season again with pepper, salt, and onion.
Cook and serve
Pour in ½ cup of water and cover the pan.
Simmer gently over low heat until the potatoes are tender.
Serve the meat arranged around the dish with potatoes in the center and the cooking liquid poured over.
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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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 main meat, which becomes tender and flavorful during slow simmering.
- Potatoes
- Absorb the cooking liquid and turn soft, thickening the stew as they break down slightly.
- Onion
- Adds aromatic sweetness and savory depth as it softens into the broth.
The step that matters
Simmer gently over low heat. Gentle heat lets the connective tissue in the mutton break down slowly, so the meat becomes tender without drying out. Boiling vigorously toughens the meat and can break up the potatoes.
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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