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
Remove the loose fat from the mutton and cut it into small, well-shaped cutlets.
Flatten the cutlets and season them with salt and mixed spices.
Peel the onions and parboil the potatoes, then skin them.
Assemble and cook
In a stewpan, lay some shredded suet at the bottom, then add the stock or melted butter.
Layer the potatoes, followed by the cutlets, then the onions, and repeat with another layer of potatoes and cutlets, finishing with a thick layer of potatoes on top.
If desired, add a small piece of ham, smoked tongue, or sausage meat.
Cover the pan tightly and cook slowly until done.
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 + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Mutton + hamtop 14% of all pairsSmell alikemoderateCooked together430 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + hamtop 16% of all pairsSmell alikemoderateCooked together5,475 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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, and its fat and connective tissue enrich the stew as it cooks slowly.
- Potatoes
- Form the thick layers that soak up stock and fat, becoming soft and starchy as they cook.
- Onions
- Add sweetness and savour as they soften slowly in the steam and juices of the pan.
- Stock or melted butter
- Provides the liquid and fat that moisten the layers and keep the stew from drying out.
The step that matters
Cover the pan tightly and cook slowly. A tight lid traps steam so the meat and potatoes cook through in their own juices. Slow heat keeps the meat tender rather than tough and stops the liquid from boiling away or scorching on the base.
Swap the potato
How well each one fits the dish's main ingredients (mutton, onion, butter, ham):
- Leekfits about as well
- Potatothe original
- Chivefits less well
- Shallotfits less well
Fit is the average pairing score against mutton, onion, butter, ham. 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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