Why it works: Onion and tomato are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 20,633 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Stewed Lamb and Green Pease
Ingredients
Directions
Prepare the lamb
Cut the lamb into 1‑inch lengths and dredge with flour.
Brown and stew
In a saucepan, heat the dripping until it hisses, then add the sliced onion and fry until light brown.
Remove the onion and add the lamb, cooking for 5 minutes while turning often to prevent sticking.
Add the boiling water or stock, cover, and cook gently for 1 hour.
Stir in the green peas and stew for an additional 20 minutes, or until tender.
Finish and serve
Add the brown roux, bring to a boil, and serve over slices of toast soaked in hot tomato sauce.
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 + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Peas + tomatotop 9% of all pairsSmell alikemoderateCooked together1,058 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lamb + tomatotop 11% of all pairsSmell alikemoderateCooked together979 recipes
Shared aroma: trans,trans-2,4-nonadienal (fatty, green).
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Onion + peastop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Lamb + peastop 14% of all pairsSmell alikemoderateCooked together650 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Lamb
- Provides the meat that becomes tender through long, gentle simmering in liquid.
- Flour
- Coats the lamb so it browns better and helps thicken the cooking liquid.
- Onion
- Browns in the hot fat to add savoury, sweet depth to the stew.
- Green peas
- Add sweetness and a tender, bright texture to the stew.
- Brown roux
- Thickens the cooking liquid and adds a toasted, nutty flavour.
The step that matters
Frying the onion in hot dripping. The onion should reach light brown, not dark, because browning builds flavour through the Maillard reaction while excess scorching turns it bitter. Turning the lamb often prevents sticking and scorched spots on the pan.
Swap the peas
How well each one fits the dish's main ingredients (lamb, flour, onion, tomato, sauce):
- Beansfits better
- Chickpeafits better
- Sesamefits better
- Peasthe original
Fit is the average pairing score against lamb, flour, onion, tomato, sauce. 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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