Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Cream of Pea Soup
Ingredients
Directions
Make the soup
Stew the can of peas in just enough water to cover them with the slice of onion until they are soft.
Press the mixture through a sieve.
Season with salt and pepper.
Add the quart of milk and heat to boiling.
Serve
Serve in bouillon cups.
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.
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Peas + oniontop 13% of all pairsSmell alikemoderateCooked together5,460 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Peas + peppertop 15% of all pairsSmell alikemoderateCooked together5,331 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Peas + milktop 16% of all pairsSmell alikemoderateCooked together1,309 recipes
Shared aroma: hexanal (green, grassy).
-
Onion + milktop 20% of all pairsSmell alikemoderateCooked together13,418 recipes
Shared aroma: hexanal (green, grassy).
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 flavor of the soup when stewed and pressed smooth.
- Rich milk
- Adds creaminess and richness, giving the soup its smooth, mellow body.
The step that matters
Heating the milk to boiling. Milk can scorch or curdle on prolonged high heat, and boiling it too hard can make the soup grainy or separate. Heat gently and stop once it reaches a boil.
Swap the peas
How well each one fits the dish's main ingredients (onion, pepper, milk):
- Beansfits better
- Sesamefits better
- Soybeanfits better
- Peasthe original
Fit is the average pairing score against onion, pepper, milk. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Green Peas229 recipes
Green Peas Soup35 recipes
Tomato Soup526 recipes
Brown Bread461 recipes