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 the cutlets with salt and pepper.
Pour cold water into the stewpan.
Simmer the stew
Bring the stew to a boil.
Skim the surface of the stew.
Reduce heat.
Let the stew simmer gently for 1 hour.
Skim the surface occasionally.
Remove fat from the stew.
Add the vegetables
Wash, scrub and peel the potatoes, then cut the potatoes in halves.
Peel the onions carefully.
Add the onions and potatoes to the stew.
Let the stew simmer for another hour.
Check if the vegetables are tender with a fork.
Serve
Arrange the cutlets in a circle on a hot dish.
Pour the sauce around the cutlets.
Place 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).
-
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 main meat, which becomes tender through long, gentle simmering.
- Potatoes
- Thicken the stew slightly as they cook and add starchy body to the broth.
- Onions
- Add sweetness and aroma as they soften and flavour the cooking liquid.
The step that matters
Skim and remove fat during the first simmer. Fat and foam rise to the surface as the meat cooks. Skimming them keeps the sauce clean and less greasy, which matters because the stew is simmered for a long time and the liquid is not reduced by boiling.
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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