Why it works: Egg and flour are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 106,462 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Noodle Soup
Ingredients
Directions
Make the broth
Place the soup bone in a pot with cold water.
Bring to a boil, then add salt and pepper.
Boil for several hours.
Make the noodles
To make the noodles, beat the eggs until light.
Add enough flour to form a very stiff dough.
Roll the dough very thin and let it dry.
Roll it up tightly like a sheet of music and cut into very thin rings.
Finish and serve
About 15 minutes before serving, add the noodles.
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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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + flourtop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + eggtop 33% of all pairsSmell alikelowCooked together50,580 recipes
Shared aroma: 2-nonenal (fatty, 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
- Soup bone
- Releases collagen and flavour into the water as it simmers, giving the broth body.
- Eggs
- Bind the flour into a dough and add richness to the noodles.
- Flour
- Forms the gluten structure that holds the stiff noodle dough together.
The step that matters
Roll the dough very thin and let it dry. Dough rolled thin and dried firmly holds its shape and cooks quickly in the broth. If it stays thick or damp, the noodles turn gummy and cook unevenly.
“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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