Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and 68,474 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Green Pease Soup
Ingredients
Directions
Prepare
Pick over the peas and remove any that are black.
Peel and cut the onions, using the green if possible.
Make the soup
Boil the peas and onions in the stock for three hours, adding a sprig of mint during the last five minutes.
Rub the mixture through a sieve.
Mix the cornflour and milk evenly, and add to the soup when cool.
Season with pepper and salt, then boil briefly.
Serve
Serve.
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. See the original page.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
-
Onion + peppertop 11% of all pairsAroma overlapmoderateMentioned together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Milk + oniontop 20% of all pairsAroma overlapmoderateMentioned together13,418 recipes
Shared aroma: hexanal (green, grassy).
-
Milk + peppertop 22% of all pairsAroma overlapmoderateMentioned together26,984 recipes
Shared aroma: ethyl 2-methylbutyrate (fruity, apple).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Peas (in the method)
- Form the main body and flavour of the soup once boiled and sieved.
- Stock
- Cooks the peas and onions and forms the liquid base of the soup.
- Young onions
- Add sweetness and savoury depth to the soup base.
- Milk
- Adds richness and softness to the finished soup.
- Cornflour (in the method)
- Thickens the soup as it is heated.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (milk, pepper):
- Capsicumbetter flavor fit
- Potatobetter flavor fit
- Tomatobetter flavor fit
- Onionthe original
Fit is the average pairing score against milk, pepper. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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