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 ↓
Lamb's Head Broth
Ingredients
Directions
Prepare
Divide the lamb's head in half and tie it together with kitchen twine.
Place the head in a saucepan with the cold water and ½ teaspoon of salt.
Make the broth
Bring the mixture slowly to a boil. Skim off any foam.
Add the blanched barley, carrot, turnip, and onion.
Simmer gently for four hours.
Finish and serve
Carefully remove the head.
Season the broth with pepper and additional salt if needed.
Skim the broth.
Add the parsley.
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.
-
Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Carrot + turniptop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
-
Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Turnip + barleytop 2% of all pairsSmell alikestrongCooked together629 recipes
Shared aroma: coumarin (sweet, hay).
-
Turnip + parsleytop 2% of all pairsSmell alikestrongCooked together2,842 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
- Lamb's head
- Gives the broth its rich meaty flavour and body as it simmers for hours.
- Pearl barley or rice
- Adds body and a soft, starchy thickness to the broth as it cooks.
- Carrot
- Contributes sweetness and aroma to the broth as it simmers.
- Turnip
- Adds mild sweetness and earthy flavour to the broth during long simmering.
- Onion
- Builds savoury depth and aroma in the broth as it cooks.
The step that matters
Simmer gently for four hours. A gentle simmer keeps the broth clear, whereas a rolling boil emulsifies fat and fine particles into it, making it cloudy and greasy.
Swap the onion
How well each one fits the dish's main ingredients (lamb, carrot, turnip, barley, parsley, pepper):
- Parsnipfits better
- Leekfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against lamb, carrot, turnip, barley, parsley, 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.
Carrot Soup134 recipes
Turnip Soup43 recipes
Cream of Barley Soup10 recipes
Tomato Soup526 recipes