Why it works: Red currant and pepper work together. They rank in the top 11% of all ingredient pairs, and cooks put them together in 267 recipes. Both carry isoamyl acetate, which smells banana, pear. The science ↓
Oxtail Soup
Ingredients
Directions
Make the stock
Simmer the oxtails in water for 30 minutes, skimming regularly.
Strain the soup, saving the oxtails, and let it cool in a bowl.
Remove the meat from the oxtails and pound it in a mortar.
Pass the pounded meat through a sieve and skim the fat from the soup.
Thicken and finish
Melt the butter in a saucepan, stir in the flour, and gradually add the soup and pounded meat.
Bring the mixture to a boil until thickened.
Stir in the red currant jelly, anchovy vinegar, and marsala, then 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.
-
Red currant + peppertop 11% of all pairsSmell alikemoderateCooked together267 recipes
Shared aroma: isoamyl acetate (banana, pear).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + anchovytop 13% of all pairsSmell alikemoderateCooked together3,697 recipes
Shared aroma: decanal (soap, orange peel).
-
Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Red currant + vinegartop 15% of all pairsSmell alikemoderateCooked together188 recipes
Shared aroma: isoamyl acetate (banana, pear).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Oxtails
- Provide the meat and gelatin-rich body that flavours the stock.
- Butter
- Carries the flour and adds richness to the roux base.
- Flour
- Thickens the soup as it cooks with the butter.
- Red currant jelly
- Adds sweetness and body, balancing the savoury stock.
- Anchovy vinegar
- Adds acidity and a salty, savoury depth.
- Marsala
- Adds sweetness and a rich, wine-based aroma.
The step that matters
Thickening the soup at a boil. Flour must be cooked in the fat and liquid until it boils to thicken fully and lose its raw starchy taste. Adding it too quickly without stirring can cause lumps, so the soup should be whisked in gradually.
Swap the red currant
How well each one fits the dish's main ingredients (butter, flour, anchovy, vinegar, pepper):
- Lemonfits better
- Limefits better
- Cherryfits better
- Red currantthe original
Fit is the average pairing score against butter, flour, anchovy, vinegar, pepper. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes
Yorkshire Pudding264 recipes