Why it works: Pepper and onion are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Stock for Clear Soup
Ingredients
Directions
Combine veal, butter, bacon, salt, pepper, and water in an iron pot or stewpan.
Heat on the fire.
When boiling, stir for about 10 minutes until it forms a thick gravy.
Add 5 pints of hot or cold water.
Bring to a boil.
Let it simmer gently for 45 minutes.
Skim as needed.
Pass the stock through a sieve to achieve a clear liquid.
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 + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Veal + oniontop 17% of all pairsSmell alikelowCooked together6,841 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Veal + peppertop 19% of all pairsSmell alikemoderateCooked together10,049 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Veal knuckle or scrag
- Provides the bones and connective tissue that give the stock its body and flavour.
- Butter or dripping
- Carries fat that helps flavour the veal as it browns and thickens the gravy.
- Bacon
- Adds savoury, smoky fat that deepens the overall flavour of the stock.
- Onions
- Add sweetness and aromatic depth as they cook down into the stock.
The step that matters
Stirring until a thick gravy forms. Stirring the meat over heat until it browns and sticks lightly to the pot builds the gravy base that gives the stock its colour and depth. Stirring too little can leave the flavour flat, while letting it scorch will make the stock bitter.
Swap the onion
How well each one fits the dish's main ingredients (veal, butter, pepper):
- Capsicumfits better
- Carrotfits about as well
- Potatofits about as well
- Onionthe original
Fit is the average pairing score against veal, butter, 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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