Why it works: Leek and shallot share more aroma than cooks usually use. They rank in the top 1% of all ingredient pairs, and cooks put them together in 64 recipes. Both carry 1-octen-3-ol, which smells mushroom, earthy. The science ↓
Brown Stock
Ingredients
Directions
Prepare
Combine the chopped beef and bones in a large pot.
Add the chopped celery, carrots, leek, onion, shallots, and sweet herbs.
Pour in 20 cups of water, using 2 cups for every pound of beef.
Simmer and strain
Bring to a gentle boil and maintain this temperature for several hours without allowing it to bubble.
Skim the surface as soon as it begins to boil, then strain the stock.
Finish
Add vermicelli, rice, tapioca, or macaroni, but do not boil them with the meat or vegetables.
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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Leek + shallottop 1% of all pairsSmell alikestrongCooked together64 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Celery + carrottop 1% of all pairsSmell alikestrongCooked together10,173 recipes
Shared aroma: myristicin (spice, warm).
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Carrot + leektop 3% of all pairsSmell alikestrongCooked together1,310 recipes
Shared aroma: coumarin (sweet, hay).
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Celery + leektop 4% of all pairsSmell alikestrongCooked together1,093 recipes
Shared aroma: coumarin (sweet, hay).
-
Leek + oniontop 4% of all pairsSmell alikestrongCooked together1,326 recipes
Shared aroma: ethyl butyrate (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Beef
- Provides the rich, savory flavor and gelatin that gives the stock body.
- Bones
- Release collagen and minerals during long cooking, adding body and depth to the stock.
- Celery, carrots, leek, onion, shallots
- Build the aromatic flavor base that sweetens and rounds out the stock.
The step that matters
Keep the stock at a gentle simmer. A hard boil emulsifies fat and clouds the stock, and churns fine particles into it. Holding a bare simmer keeps the liquid clear and the fat easier to skim.
Swap the shallot
How well each one fits the dish's main ingredients (beef, celery, carrot, leek, onion):
- Turnipfits better
- Parsnipfits better
- Chivefits better
- Shallotthe original
Fit is the average pairing score against beef, celery, carrot, leek, onion. 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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