Why it works: Carrot and turnip match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,002 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Ox Tail Soup
Ingredients
Directions
Prepare
Cut the tails into joints and wash them.
Put the joints into a stewpan with the butter.
Stir over high heat until it boils.
Add the rest of the water and salt, and boil again.
Skim the surface.
Cut all the vegetables into slices.
Simmer and finish
Add the sliced vegetables along with the other ingredients except the port wine.
Simmer for 4.5 hours.
Strain the soup.
Add the port wine.
Heat for 5 minutes.
Return the tails to the soup 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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Carrot + turniptop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
-
Carrot + clovetop 5% of all pairsSmell alikestrongCooked together5,873 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Onion + turniptop 5% of all pairsSmell alikestrongCooked together7,585 recipes
Shared aroma: coumarin (sweet, hay).
-
Turnip + clovetop 6% of all pairsSmell alikestrongCooked together2,233 recipes
Shared aroma: coumarin (sweet, hay).
-
Carrot + oniontop 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 and gelatin that give the soup body and a rich, savoury flavour.
- Butter
- Fat that carries flavour and helps brown the joints at the start.
- Onions
- Add sweetness and aromatic depth as they soften during the long simmer.
- Carrots
- Add natural sweetness and body to the broth during simmering.
- Turnips
- Add mild sweetness and earthy flavour to the broth.
- Port wine
- Adds sweetness, depth and aroma, added at the end so its flavour stays bright.
The step that matters
Skim the surface. Skimming removes foam and fat that rise as the liquid first boils. Removing them early keeps the broth clear and clean-tasting over the long simmer.
Swap the onion
How well each one fits the dish's main ingredients (ham, butter, carrot, turnip, clove, sugar, port wine):
- Leekfits better
- Shallotfits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against ham, butter, carrot, turnip, clove, sugar, port wine. 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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