Why it works: Celery and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 6,810 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Ox-tail Soup
Ingredients
Directions
Prepare
Wash and cut the ox tails at the joints.
Heat the drippings in a pot.
Sauté the onion and half of the ox tail.
Make the soup
Add all ingredients to a soup kettle with the water.
Bring the mixture to a boil.
Add the seasoning and vegetables.
Cook slowly for six hours.
Strain the soup.
Save some pieces of meat.
Remove the fat.
Finish and serve
Reheat the soup.
Adjust seasoning if necessary.
Add small pieces of meat to each 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.
-
Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Clove + celerytop 6% of all pairsSmell alikestrongCooked together4,668 recipes
Shared aroma: gamma-decalactone (peach, creamy).
-
Clove + parsleytop 6% of all pairsSmell alikestrongCooked together6,768 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Onion + beeftop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + celerytop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ox tails
- Provide the meat and collagen that give the soup its body and rich flavor.
- Onion
- Adds sweetness and aroma when sautéed in the drippings.
- Beef or salt pork drippings
- Fat for sautéing that carries flavor and browns the onion and meat.
- Celery
- Adds aromatic flavor and a fresh, vegetal note to the broth.
The step that matters
Cook slowly for six hours. A gentle simmer lets collagen in the ox tails break down into gelatin, giving the broth body. A hard boil can make the broth cloudy and greasy.
Swap the clove
How well each one fits the dish's main ingredients (onion, beef, celery, parsley):
- Thymefits better
- Tarragonfits better
- Garlicfits better
- Clovethe original
Fit is the average pairing score against onion, beef, celery, parsley. 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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