Why it works: Pepper and potato are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 8,305 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Roast Mutton
Ingredients
Directions
Prepare and roast
Rub the roast with pepper, coarse sea salt, and sprinkle with flour.
Place in a covered pan on a rack and add 1 pint of water.
Cook until browned, adding more water as necessary.
Add potatoes and serve
Cut Irish potatoes into quarters and cook them in the same pan for 30 minutes.
Garnish the dish with the cooked potatoes and serve the gravy in a bowl.
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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Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Flour + potatotop 15% of all pairsSmell alikemoderateCooked together5,355 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mutton + peppertop 16% of all pairsSmell alikelowCooked together5,442 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Mutton + potatotop 19% of all pairsSmell alikemoderateCooked together293 recipes
Shared aroma: 2-nonenal (fatty, green).
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Pepper + flourtop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mutton or lamb roast
- Provides the main meat, which browns and becomes tender during slow covered cooking.
- Flour
- Coats the surface so it browns and helps form a richer gravy.
- Irish potatoes
- Absorb cooking juices and add starchy bulk alongside the roast.
- Water
- Creates steam in the covered pan and forms the base of the gravy.
The step that matters
Cook until browned, adding more water as necessary. Browning depends on surface dryness and heat, but the pan can dry out. Adding water keeps the juices present so the meat braises gently while the surface still browns. Too little liquid can scorch the drippings and make the gravy bitter.
Swap the potato
How well each one fits the dish's main ingredients (mutton, pepper, flour):
- Turnipfits better
- Shallotfits better
- Spinachfits better
- Potatothe original
Fit is the average pairing score against mutton, pepper, 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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