Why it works: Bread and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Normandy Soup
Ingredients
Directions
Make the stock
Cut the meat off the veal knuckle and crack the bones.
Put the bones and meat in a kettle, cover with cold water, and simmer gently for 1 hour.
Add the onions and simmer for another hour.
Add the sliced bread and simmer for 30 minutes.
Strain and thicken
Remove the bones and press the stock, onions, and bread through a sieve.
In a bowl, rub together the butter and flour until smooth.
Return the soup to the kettle, add the butter and flour mixture, and stir until it thickens.
Finish the soup
Scald the cream, add it to the soup, and season with salt and pepper to taste before serving.
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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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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
- Gives the stock its body and rich meaty flavour as it simmers.
- White button onions
- Soften during long simmering and add sweetness and body to the pressed soup.
- Bread
- Thickens the stock as it cooks and is pressed through the sieve, adding body.
- Butter and flour
- Form a roux-style paste that thickens the soup when stirred into it.
- Cream
- Adds richness and a smooth, velvety texture to the finished soup.
The step that matters
Adding the butter and flour mixture. Stirring the flour and butter into hot soup can leave lumps if not whisked smoothly, and the soup must be kept simmering while it thickens so the starch cooks fully and loses its raw floury taste.
Swap the onion
How well each one fits the dish's main ingredients (veal, bread, butter, flour, cream, pepper):
- Leekfits better
- Shallotfits about as well
- Spinachfits about as well
- Onionthe original
Fit is the average pairing score against veal, bread, butter, flour, cream, 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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