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 Stew
Ingredients
Directions
Prepare the mutton
Cover mutton chops with water and bring to a boil.
Pour off the water and add more fresh water.
Make the stew
Melt the butter in a pot, then stir in the flour.
Add the milk, pepper, and salt, mixing well.
Add the potatoes and onions, then boil until the potatoes are 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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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Milk + potatotop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 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 chops
- Provide the main meat flavour and body of the stew.
- Butter
- Adds richness and fat, carrying flavour through the sauce.
- Flour
- Thickens the liquid as it cooks with the butter and milk.
- Milk
- Adds creaminess and mildness to the thickened sauce.
- Potatoes
- Soften during boiling and add body and starch to the stew.
- Onions
- Soften and turn sweeter as they cook, adding aroma.
The step that matters
Stirring the milk into the butter and flour. Flour cooked in butter forms a roux that thickens liquid. Adding milk while mixing well helps the starch disperse evenly, which prevents lumps and gives a smooth sauce.
Swap the onion
How well each one fits the dish's main ingredients (mutton, egg, butter, flour, milk, pepper, potato):
- Asparagusfits better
- Chivefits better
- Leekfits better
- Onionthe original
Fit is the average pairing score against mutton, egg, butter, flour, milk, 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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