Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Ox Heel Soup
Ingredients
Directions
Prepare the stock
Cut the meat off the boiled heels into neat pieces and set aside.
Place the trimmings and bones in a stew-pan with water and the unboiled heel cut into quarters.
Add onions, turnips, carrots, eschalots, savory, thyme, and parsley.
Cover and simmer gently for at least 7 hours, skimming off fat and scum regularly.
Strain the liquid through a sieve into a clean stew-pan.
Finish the soup
Melt butter in the stew-pan, then stir in the strained broth.
Add the reserved meat, mushroom ketchup, wine, and season with salt.
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 + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Lemon + parsleytop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Turnip + carrottop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
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Turnip + parsleytop 2% of all pairsSmell alikestrongCooked together2,842 recipes
Shared aroma: coumarin (sweet, hay).
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Onion + turniptop 5% of all pairsSmell alikestrongCooked together7,585 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ox heel
- Releases gelatin and collagen into the broth, giving it body and a rich mouthfeel.
- Onions
- Add sweetness and savoury depth as they soften and release their flavour into the stock.
- Carrots
- Contribute natural sweetness and body to the stock during long simmering.
- Butter
- Adds fat that carries flavour and gives the finished soup a rounded, smooth richness.
- Wine
- Adds acidity and aromatic depth that brightens the richness of the broth.
- Mushroom ketchup
- Adds concentrated savoury, umami depth to the soup.
The step that matters
Skimming during the long simmer. Fat and scum rise to the surface during the long simmer and, if left in, make the broth greasy and cloudy. Regular skimming keeps the stock clear and clean-tasting.
Swap the lemon
How well each one fits the dish's main ingredients (onion, turnip, carrot, parsley, butter, mushroom, ketchup):
- Lemonthe original
- Limefits about as well
- Avocadofits less well
- Red currantfits less well
Fit is the average pairing score against onion, turnip, carrot, parsley, butter, mushroom, ketchup. 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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