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
Trim excess fat from the neck of mutton and cut it into cutlets according to the number of bones.
Sprinkle the cutlets with pepper.
Peel the onions and blanch them separately with the potatoes.
Assemble and stew
In a clean 3‑quart stewpan, add ½ pint of water or stock.
Layer the bottom with potatoes, then add cutlets, onions, and repeat the layers, finishing with a layer of potatoes on top.
Add bacon or ham if desired.
Stew slowly until the cutlets are cooked, ensuring there is enough liquid to prevent burning.
If the mutton is lean, add a little butter 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).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 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).
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 rich flavour that the stew is built around.
- Potatoes
- Absorb the cooking liquid and thicken the stew as they soften, adding body.
- Onions
- Add sweetness and aroma as they cook slowly in the liquid.
- Butter
- Adds fat and richness to lean mutton, improving mouthfeel and flavour.
The step that matters
Keeping enough liquid during the slow stew. Without enough water or stock, the bottom of the stewpan can scorch and burn before the cutlets are cooked through. Slow simmering over gentle heat keeps the meat tender and the stew from catching.
Swap the potato
How well each one fits the dish's main ingredients (mutton, onion, ham, butter, pepper):
- Potatothe original
- Leekfits about as well
- Carrotfits about as well
- Capsicumfits less well
Fit is the average pairing score against mutton, onion, ham, butter, 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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