Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Ox Tail, Simple Mode of Cooking
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Joint the ox tail and cut it into pieces about 2 inches long.
Roll the pieces in flour and place them side by side in a baking dish.
Season and bake
Sprinkle with pepper, salt, minced onion, and chopped parsley.
Pour stock or water over the pieces.
Bake in a moderate oven at 350°F (175°C) for 3.5 hours.
Serve
Serve on a hot dish with the gravy.
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.
-
Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Flour + parsleytop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + oniontop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ox tail
- Provides the main meat and, with slow cooking, gelatin that enriches the gravy.
- Flour
- Coats the pieces, helping the surface brown and thickening the gravy slightly.
- Onion
- Adds aroma and savoury sweetness as it softens in the liquid during baking.
- Stock or water
- Provides the cooking liquid that gently braises the meat and forms the gravy.
The step that matters
Baking at a moderate oven for the full time. Oxtail is tough connective tissue. Slow, moist heat over a long period is needed to break down collagen into gelatin, so stopping early leaves the meat chewy.
Swap the onion
How well each one fits the dish's main ingredients (flour, pepper, parsley):
- Carrotfits better
- Shallotfits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against flour, pepper, 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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