Why it works: Onion and carrot are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 21,601 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Stock, Bone
Ingredients
Directions
Prepare
Place the bones in a small stock pot and cover with water.
Bring to a boil and skim off any foam.
Simmer and season
Add the onion, carrot, and bay leaf.
Simmer for 2 to 3 hours.
Season with coarse sea salt to taste.
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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Onion + carrottop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Bones
- Release collagen, gelatin and minerals into the water, giving the broth body and flavour.
- Onion
- Adds savoury sweetness and aroma as it softens during the long simmer.
- Carrot
- Adds natural sweetness and aroma to the broth.
The step that matters
Skim off the foam after boiling. Foam carries impurities and proteins from the bones that can turn the broth cloudy and give it a bitter, scummy taste. Removing it early keeps the broth clear and clean-flavoured.
“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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