Why it works: Peas and lettuce match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 1,293 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓
Stewed Mutton with Peas
Ingredients
Directions
Prepare
Wash the lettuce and cut the heart and best leaves into pieces.
In a stewpan, combine the lettuce pieces, sliced onion, and shelled peas.
Add the mutton cut into pieces and pour in the stock.
Stew and finish
Simmer gently for three hours.
Thicken the stew with flour and butter, then add Worcestershire sauce.
Serve hot.
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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Peas + lettucetop 5% of all pairsSmell alikestrongCooked together1,293 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Lettuce + oniontop 8% of all pairsSmell alikestrongCooked together3,562 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lettuce + flourtop 11% of all pairsSmell alikestrongCooked together1,236 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Peas + oniontop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mutton
- Provides the meat that becomes tender during long, gentle simmering.
- Green peas
- Add sweetness and a soft texture to the finished stew.
- Lettuce
- Softens as it cooks, adding body and a mild, sweet flavour to the stew.
- Flour
- Thickens the stewing liquid into a rich, smooth sauce.
- Butter
- Adds richness and fat that helps smooth and thicken the sauce with the flour.
The step that matters
Simmer gently for three hours. A gentle simmer breaks down the connective tissue in mutton slowly, making it tender. Boiling hard toughens the meat and can break up the peas and lettuce.
Swap the peas
How well each one fits the dish's main ingredients (lettuce, onion, flour, butter, sauce, mutton):
- Beansfits better
- Lentilsfits better
- Chestnutfits better
- Peasthe original
Fit is the average pairing score against lettuce, onion, flour, butter, sauce, mutton. 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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