Why it works: Pepper and tomato are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Noodle Soup
Ingredients
Directions
Make the broth
Boil the brisket in water for 2 hours.
Add salt, pepper, onion, and tomatoes to the broth.
Boil until the meat is tender.
Strain the broth.
Make and cook the noodles
In a bowl, mix eggs, flour, and salt to make a stiff dough.
Roll the dough very thin, then dry it, fold, and cut into thin noodles.
Use 1 gallon of boiling broth and gradually drop in the noodles.
Boil for 20 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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Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
Egg and flour barely smell alike, yet cooks put them together in 106,462 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
- Brisket
- Slow boiling in water turns tough connective tissue tender, flavouring the broth as it cooks.
- Eggs
- Bind the flour into a stiff dough and add richness and structure to the noodles.
- Flour
- Forms the gluten network that gives the noodle dough its structure and chew.
- Onion
- Adds aromatic sweetness and depth to the broth as it simmers.
- Tomatoes
- Add acidity and body to the broth.
The step that matters
Roll the dough very thin. Thin dough cooks through quickly and stays tender. Thick dough stays doughy in the centre and can turn gummy in the hot broth.
Swap the onion
How well each one fits the dish's main ingredients (pepper, tomato, egg, flour):
- Capsicumfits better
- Eggplantfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against pepper, tomato, egg, flour. 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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