Why it works: Corn and onion are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 4,205 recipes. Both carry hexanal, which smells green, grassy. The science ↓
Macaroni Soup
Ingredients
Directions
Prepare the broth
Boil the onion in a pint of salted water for 5 minutes.
Strain the onion water.
Cook the macaroni
When the water boils again, add the macaroni and butter.
Boil gently until the macaroni is tender.
Drain the macaroni and spread it out to cool.
Finish the soup
Take the fat from the top of your cold soup and thin it with 1 cup of boiling water.
Strain the mixture into a soup pot.
Heat the soup pot to a boil.
Skim the surface.
Season the soup.
Stir in the corn-starch and cook until thickened.
Add the macaroni back to the soup.
Simmer for 10 minutes.
Serve in a tureen.
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.
-
Corn + oniontop 13% of all pairsSmell alikemoderateCooked together4,205 recipes
Shared aroma: hexanal (green, grassy).
-
Corn + buttertop 14% of all pairsSmell alikemoderateCooked together7,345 recipes
Shared aroma: 2,3-pentanedione (butter, sweet).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Macaroni
- Provides the bulk and chewy body of the soup.
- Corn-starch
- Thickens the broth as it heats, giving it body.
- Butter
- Adds richness and a smooth mouthfeel.
- Onion
- Flavors the water with a mild, sweet aroma.
The step that matters
Stir in the corn-starch and cook until thickened. Starch clumps if dropped into liquid without stirring. Stirring while heating lets the granules swell evenly and thicken the soup, and cooking it fully removes the raw starch taste.
Swap the onion
How well each one fits the dish's main ingredients (corn, butter):
- Potatofits better
- Capsicumfits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against corn, butter. 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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