Why it works: Carrot and pepper match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 14,555 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Mutton Noodle Soup
Ingredients
Directions
Make the broth
Combine sheep's head, mutton, onions, carrots, herbs, and 4 quarts of water in a soup kettle.
Simmer for 2 hours until the sheep's head is tender and the bones slip out.
Skim the surface, add 3 quarts of cold water, and remove the head after 3 minutes.
Carefully pull out the bones from the head and return them to the kettle.
Add the vegetables and herbs, bring to a slow boil, and cook for 3 more hours.
Strain and season
Remove the meat and bones, season with salt, and store in a stock jar with half the broth.
Rub the vegetables through a sieve into the remaining broth.
Cool and skim the broth, then bring it back to a boil.
Serve
Add the noodles and simmer for 20 minutes before serving.
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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Carrot + peppertop 6% of all pairsSmell alikestrongCooked together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + carrottop 6% of all pairsSmell alikemoderateCooked together21,601 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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Mutton + peppertop 16% of all pairsSmell alikelowCooked together5,442 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Mutton + carrottop 18% of all pairsSmell alikelowCooked together1,878 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sheep's head
- Releases gelatin and collagen from bones and skin, giving the broth body and a rich mouthfeel.
- Mutton scrag
- Adds meaty flavour and fat to the broth as it simmers.
- Onions
- Contribute sweetness and savoury depth to the broth as they cook down.
- Carrots
- Add natural sweetness and body when pressed through the sieve into the broth.
- Noodles
- Absorb broth and provide a soft, chewy texture to the finished soup.
The step that matters
Simmer gently, do not boil hard. A slow simmer lets collagen and fat release into the broth while keeping it clear. A hard rolling boil emulsifies fat and cloudies the stock, and can toughen the meat.
Swap the onion
How well each one fits the dish's main ingredients (mutton, carrot, pepper):
- Capsicumfits better
- Turnipfits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against mutton, carrot, 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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