Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Clam Soup
Ingredients
Directions
Make the soup
Boil the knuckle of veal in 3 quarts of salted water.
Add the clams and their juice, along with pepper, parsley, and onions. If the clams are small, use more of them.
Finish with dumplings
Make small dumplings by mixing the egg, butter, and enough flour to form a paste.
Add the dumplings to the soup and cook until they are done.
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 + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Clam + buttertop 11% of all pairsSmell alikemoderateCooked together840 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Veal knuckle
- Releases gelatin and savory flavor into the water, giving the broth body.
- Clams
- Provide the main briny, seafood flavor of the soup.
- Egg
- Binds the dumpling dough so the dumplings hold their shape while cooking.
- Butter
- Adds richness and tenderness to the dumplings.
- Flour
- Forms the dumpling paste and gives the dumplings their body.
The step that matters
Cooking the dumplings. Dumpling dough is soft and can break apart or turn gummy if it is dropped into the soup too early or cooked too hard. Adding it to gently simmering broth and cooking only until done lets the starch set into a firm, tender dumpling.
Swap the onion
How well each one fits the dish's main ingredients (veal, clam, pepper, parsley, egg, butter, flour):
- Shallotfits better
- Potatofits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against veal, clam, pepper, parsley, egg, butter, 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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