Why it works: Onion and potato are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Braised Leg of Mutton
Ingredients
Directions
Prepare
Line the bottom of a thick iron kettle or stew-pan with thin slices of bacon.
Place 4 carrots, 3 onions, and a bunch of savory herbs over the bacon.
Put the leg of mutton on top, cover with more bacon, and pour in ½ pint of water.
Braise and season
Cover tightly and stew gently for 4 hours, basting occasionally with its own juices.
Season with salt and pepper when the meat begins to tenderize.
Make the gravy and serve
Strain the gravy and thicken it with 1 tablespoon of flour until brown.
Pour some gravy over the meat and serve the rest in a tureen.
Garnish the dish with potatoes cut like olives and fried in butter.
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 + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + potatotop 4% of all pairsSmell alikestrongCooked together3,107 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Carrot + peppertop 6% of all pairsSmell alikestrongCooked together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + oniontop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Leg of mutton
- Forms the main meat, which becomes tender through slow, moist stewing.
- Bacon
- Releases fat and savoury juices that flavour the meat and the gravy below it.
- Carrots
- Add sweetness and body to the braising liquid and the resulting gravy.
- Onions
- Break down during stewing, adding savoury depth and sweetness to the gravy.
- Flour
- Thickens the strained gravy and helps it brown as it cooks.
The step that matters
Stew gently with the lid tightly covered. Slow, gentle heat in a sealed pot breaks down tough connective tissue in the mutton and keeps the meat moist. Boiling hard would toughen the muscle fibres and dry the meat.
Swap the onion
How well each one fits the dish's main ingredients (mutton, carrot, pepper, flour, potato, butter):
- Leekfits better
- Turnipfits better
- Parsnipfits about as well
- Onionthe original
Fit is the average pairing score against mutton, carrot, pepper, flour, potato, 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.
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