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 ↓
Noodle Soup
Ingredients
Directions
Make the milk base
In a double boiler, heat 2 pints of milk with the onion and mace.
Mix the flour with ½ cup of cold milk until smooth.
Stir the flour mixture into the boiling milk.
Add salt and pepper, and cook for 15 minutes.
Add the noodles
Add the noodles and cook for an additional 5 minutes.
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.
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mace + peppertop 16% of all pairsSmell alikelowCooked together12,257 recipes
Shared aroma: myristicin (spice, warm).
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Onion + macetop 17% of all pairsSmell alikelowCooked together7,078 recipes
Shared aroma: eugenol (clove, spicy).
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Flour + oniontop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
Milk and flour barely smell alike, yet cooks put them together in 78,219 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Milk
- Forms the liquid base of the soup and gives it a creamy body as it heats.
- Flour
- Thickens the milk as its starch swells and sets when heated in liquid.
- Noodles
- Absorb liquid and add starch and a chewy texture as they cook in the soup.
The step that matters
Stirring the flour mixture into the boiling milk. Flour clumps when it hits hot liquid unless it is first smoothed into cold milk. Stirring steadily as you add it spreads the starch so it thickens evenly instead of forming lumps.
Swap the mace
How well each one fits the dish's main ingredients (milk, flour, onion, pepper):
- Turmericfits better
- Cardamomfits better
- Garlicfits better
- Macethe original
Fit is the average pairing score against milk, flour, onion, pepper. 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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