Why it works: Cucumber and lettuce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,409 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
A Cheap Green Peas Soup
Ingredients
Directions
Make the pea shell liquor
Wash the pea shells thoroughly and add them to boiling salted water.
Cook the pea shells for 20 to 30 minutes until tender.
Strain the cooked pea shells and press the pods with a wooden spoon.
Measure the liquid and pour 2 quarts into a clean deep saucepan.
Simmer the soup
Bring the liquid to a boil.
Add 1 quart of green peas, cucumbers, lettuces, and the thinly sliced onion that has been stewed in butter for 30 minutes.
Add parsley and mint leaves.
Simmer gently for 1 hour.
Season with salt and white pepper or cayenne to taste.
Finish and serve
Strain the soup through a fine sieve.
Reheat the soup.
Serve with small fried sippets.
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.
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Cucumber + lettucetop 1% of all pairsSmell alikestrongCooked together1,409 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Peas + minttop 2% of all pairsSmell alikemoderateCooked together1,137 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Lettuce + parsleytop 5% of all pairsSmell alikestrongCooked together1,483 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Cucumber + minttop 5% of all pairsSmell alikemoderateCooked together884 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Peas + lettucetop 5% of all pairsSmell alikestrongCooked together1,293 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Green peas
- Give the soup its body, sweet flavor and bright green color.
- Pea shells
- Release flavor and starch into the liquor that forms the soup base.
- Lettuces
- Add soft texture and a mild, sweet vegetal flavor as they cook down.
- Cucumbers
- Contribute a cool, fresh flavor and watery, tender texture.
- Onion
- Adds savory depth and aroma as it softens in butter.
- Butter
- Adds richness and carries the flavor of the onion.
The step that matters
Stewing the sliced onion in butter. Cooking the onion slowly in butter softens it and builds sweetness and aroma. Rushing it or letting it brown can leave harsh, bitter notes in the soup.
Swap the white pepper
How well each one fits the dish's main ingredients (peas, cucumber, lettuce, onion, butter, parsley, mint):
- Tarragonfits better
- Capersfits better
- Thymefits better
- White pepperthe original
Fit is the average pairing score against peas, cucumber, lettuce, onion, butter, parsley, mint. 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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