Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Mutton Hashed
Ingredients
Directions
Make the sauce
In a stewpan, combine gravy or broth, ketchup, browning, onion, pepper, and salt.
Heat over medium heat and thicken with flour and butter.
Finish and serve
Once boiling, add the mutton and shake until thoroughly hot.
Transfer to a soup dish and serve.
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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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Ketchup + flourtop 13% of all pairsSmell alikemoderateCooked together2,435 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Pepper + muttontop 16% of all pairsSmell alikelowCooked together5,442 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mutton
- Provides the meat that is heated through in the thickened sauce.
- Flour
- Thickens the gravy into a smooth, coating sauce when heated with butter.
- Butter
- Adds fat and richness, and works with flour to thicken the sauce.
- Onion
- Adds savory, aromatic flavor that mellows as it cooks in the liquid.
The step that matters
Thickening with flour and butter. Flour must be cooked with the butter and liquid over heat so the starch swells and thickens evenly. Adding it cold or unmixed can leave lumps and a floury taste.
Swap the onion
How well each one fits the dish's main ingredients (ketchup, pepper, flour, butter, mutton):
- Shallotfits better
- Capsicumfits better
- Leekfits better
- Onionthe original
Fit is the average pairing score against ketchup, pepper, flour, butter, mutton. 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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