Why it works: Lettuce and spinach match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 427 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓
Green Pea Soup
Ingredients
Directions
Make the soup base
Combine the ham, butter, 1 pint of stock, peas, chopped onions, and cabbage lettuces in a small soup pot.
Simmer gently until the stock is nearly reduced.
Add 2 quarts of good stock and the crumb of 2 French rolls.
Boil gently for 1 hour.
Prepare the spinach and strain
Boil the spinach, then strain the water.
Press the spinach between two plates.
Rub the soup through a fine sieve.
Add the pressed spinach for color.
Finish the soup
Boil the younger peas in 1 pint of good stock until done.
Add the younger peas and their stock to the soup.
Stir in a little sugar.
Bring to a boil.
Add coarse sea salt if needed.
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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Lettuce + spinachtop 1% of all pairsSmell alikestrongCooked together427 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Cabbage + lettucetop 4% of all pairsSmell alikestrongCooked together622 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Cabbage + spinachtop 6% of all pairsSmell alikestrongCooked together190 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Onion + cabbagetop 7% of all pairsSmell alikestrongCooked together3,001 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
- Peas
- Provide the main body and sweet, vegetal flavor of the soup.
- Lean ham
- Adds savory, meaty flavor that deepens the soup's taste.
- Butter
- Adds richness and carries flavor from the aromatics into the soup.
- French rolls
- Their crumb acts as a thickener, giving the soup more body.
- Onions
- Build a savory aromatic base as they soften in the stock.
- Spinach
- Adds a bright green color to the soup.
The step that matters
Rubbing the soup through a fine sieve. Pushing the cooked solids through a fine sieve breaks them down and removes fibers, giving the soup a smooth, even texture. Skipping or rushing this leaves the soup grainy.
Swap the peas
How well each one fits the dish's main ingredients (ham, butter, onion, cabbage, lettuce, spinach, sugar):
- Chestnutfits better
- Beansfits better
- Lentilsfits better
- Peasthe original
Fit is the average pairing score against ham, butter, onion, cabbage, lettuce, spinach, sugar. 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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