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 ↓
Ox-tail Soup
Ingredients
Directions
Prepare
Divide the ox tails at the joints and soak them in warm water.
Place the tails in a soup pot with 2 quarts of cold water.
Make the soup
Skim the surface carefully.
Add the chopped onion and carrot.
Season with spices and sweet herbs to taste.
Boil for 3 to 4 hours.
When the meat is boiled to shreds, remove the bones.
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
- Ox tails
- Provide meat, fat and collagen that enrich the broth as they simmer.
- Onion
- Adds savory sweetness and aroma to the broth as it cooks.
- Carrot
- Adds subtle sweetness and body to the broth.
The step that matters
Skim the surface carefully. Fat and foam rise to the top during simmering. Skimming them removes impurities and excess grease, giving a clearer, cleaner-tasting broth.
“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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