Why it works: Onion and butter are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 42,912 recipes. Both carry decanal, which smells soap, orange peel. The science ↓
Curried Mutton
Ingredients
Directions
Prepare
Place the mutton breast in a stewpan with 2 quarts of water.
Season and simmer slowly for 1.5 hours.
Make the curry sauce
In a separate pan, brown the sliced onion in butter.
Add the curry powder and a little salt to the onions.
Remove the meat from the broth and stir the curry mixture through the broth.
Finish and serve
Return the meat to the stewpan and stew for an additional hour.
Dish the mutton and pour the gravy over it.
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.
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Mutton + buttertop 16% of all pairsSmell alikemoderateCooked together3,781 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Mutton + oniontop 18% of all pairsSmell alikelowCooked together4,531 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mutton breast
- Provides the main meat, which becomes tender through long, slow simmering.
- Onion
- Browned in butter to add sweetness and savory depth to the gravy.
- Butter
- Carries the onion browning and adds richness to the gravy.
- Curry powder
- Supplies the spice flavor that defines the dish and is stirred into the broth.
The step that matters
Stir the curry mixture through the broth. Curry powder needs to be cooked briefly in fat to bloom its aromatic compounds, so it should be stirred in with the browned onions and butter rather than added raw. Mixing it evenly into the broth prevents clumps and uneven spice.
Swap the onion
How well each one fits the dish's main ingredients (mutton, butter):
- Potatofits about as well
- Leekfits about as well
- Onionthe original
- Shallotfits less well
Fit is the average pairing score against mutton, butter. 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.

Mutton Broth292 recipes
Haricot Mutton59 recipes
Mutton Soup56 recipes
Beef, Mutton, or Veal Broth6 recipes