Why it works: Parsley and thyme match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,057 recipes. Both carry cuminaldehyde, which smells Spicy, cumin. The science ↓
Ox-tail Soup
Ingredients
Directions
Prepare the meat and vegetables
Cut the ox-tail into joints and fry in butter until browned.
Remove the tail and fry the onions and carrots in the same butter.
Simmer the soup
Cover the vegetables with the stock and add the ox-tail, thyme, and bay leaf.
Cook slowly for 4 hours.
Season with salt and pepper.
Cool, skim and finish
Transfer to a covered bowl to cool.
After several hours, remove the layer of fat from the top.
Warm the stock slightly and strain through a colander, reserving a few joints.
Heat the soup to a boil.
Color with caramel.
Serve.
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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Parsley + thymetop 1% of all pairsSmell alikestrongCooked together9,057 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Celery + carrottop 1% of all pairsSmell alikestrongCooked together10,173 recipes
Shared aroma: myristicin (spice, warm).
-
Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ox-tail
- Releases gelatin and meaty flavor into the stock during long, slow cooking.
- Butter
- Fat that browns the ox-tail and softens the vegetables, building savory flavor.
- Onion
- Sweetens and deepens the soup's base flavor as it cooks down in butter.
- Carrot
- Adds natural sweetness and body to the stock as it softens.
- Stock
- Forms the liquid base that carries the flavor of the meat and vegetables.
The step that matters
Skimming the fat after chilling. Fat rises and solidifies on cooled stock; removing it before reheating keeps the soup clear and prevents a greasy mouthfeel.
Swap the onion
How well each one fits the dish's main ingredients (celery, carrot, butter, pepper, parsley, thyme):
- Parsnipfits better
- Turnipfits better
- Leekfits better
- Onionthe original
Fit is the average pairing score against celery, carrot, butter, pepper, parsley, thyme. 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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