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 Shank Jelly, or Soup
Ingredients
Directions
Prepare
Clean the mutton shanks well.
Place them in a large pot with water, onion, salt, pepper, sweet herbs, and bread crust.
Cook and strain
Simmer until the liquid is reduced by half, or place in a covered jug in the oven.
Strain the soup and let it cool.
Finish
Remove the fat from the top when cold 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.
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Mutton + breadtop 12% of all pairsSmell alikemoderateCooked together1,488 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Onion + breadtop 15% of all pairsSmell alikemoderateCooked together8,676 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Mutton + peppertop 16% of all pairsSmell alikelowCooked together5,442 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Pepper + breadtop 16% of all pairsSmell alikemoderateCooked together20,964 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mutton shanks
- Provide the meat and collagen that give the broth body and a jelly-like set when chilled.
- Water
- Extracts flavour and gelatin from the shanks as it simmers, forming the base liquid.
- Bread crust
- Adds a little body and helps clarify the broth as it cooks.
The step that matters
Simmering until the liquid is reduced by half. Long, gentle cooking draws collagen from the shanks into the liquid. Boiling hard can cloud the broth, and too little reduction leaves it too weak to set.
Swap the onion
How well each one fits the dish's main ingredients (mutton, pepper, bread):
- Capsicumfits better
- Tomatofits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against mutton, pepper, bread. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Brown Bread461 recipes
Mutton Broth292 recipes
White Bread80 recipes
Bread Omelette60 recipes