Why it works: Potato and onion 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 Mutton Stew
Ingredients
Directions
Prepare the stew
Wash the mutton pieces.
Place the mutton in a kettle with enough water to cover. Replenish the water if it boils out too much.
Add salt and pepper.
Let the mutton simmer until nearly done.
Add vegetables and thicken
Add the potatoes, carrots, onions, and herbs (if using). Boil until the vegetables are tender.
Mix flour with water to form a smooth paste. Stir the paste into the stew until thickened.
Serve
Serve in a hot deep dish or on a hot platter.
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.
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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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + carrottop 4% of all pairsSmell alikestrongCooked together3,107 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Pepper + carrottop 6% of all pairsSmell alikestrongCooked together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + oniontop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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, whose slow simmering turns tough connective tissue tender and flavourful.
- Potatoes
- Break down partly during boiling, adding body and starch that helps thicken the stew.
- Flour
- Starch that swells in the hot liquid, thickening the stew into a smooth, cohesive sauce.
- Carrots
- Hold their shape during boiling and add natural sweetness to the savoury broth.
- Onions
- Soften as they cook, releasing sweetness and aroma into the broth.
The step that matters
Stirring the flour paste into the stew. Flour clumps if added dry or without being smoothed into water first. Mixing it into a smooth paste and stirring it in while the stew is hot lets the starch disperse and swell evenly, giving a smooth, thickened result rather than lumps.
Swap the onion
How well each one fits the dish's main ingredients (mutton, meat, pepper, potato, carrot, flour):
- Turnipfits better
- Leekfits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against mutton, meat, pepper, potato, carrot, 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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