Why it works: Carrot and turnip match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,002 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Plain Calf's Head Soup
Ingredients
Directions
Make the broth
Fry the beef strips and sliced onion in dripping until brown.
Add grated carrot, sliced turnip, chopped herbs, and pot liquor.
Cook gently for three hours.
Strain the broth.
Thicken and serve
Mix browned flour with cold water and add the mixture to the broth.
Simmer for one minute.
Add diced cold tongue and brains and cook gently for three minutes.
Pour out the soup.
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 + turniptop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
-
Onion + turniptop 5% of all pairsSmell alikestrongCooked together7,585 recipes
Shared aroma: coumarin (sweet, hay).
-
Onion + carrottop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Turnip + flourtop 7% of all pairsSmell alikestrongCooked together2,874 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
- Lean beef
- Browns in the dripping to build savoury flavour and body in the broth.
- Browned flour
- Thickens the broth as it simmers, giving the soup a richer body.
- Dripping
- Carries heat for browning the beef and onion and adds richness.
- Turnip
- Softens during the long simmer, adding mild sweetness and body to the broth.
The step that matters
Adding the browned flour mixture. Flour must be whisked smoothly into cold water before it goes into the hot broth, otherwise it clumps. Simmering briefly then cooks out the raw flour taste and lets the starch thicken the liquid.
Swap the onion
How well each one fits the dish's main ingredients (beef, carrot, turnip, flour):
- Parsnipfits better
- Leekfits better
- Arrowrootfits better
- Onionthe original
Fit is the average pairing score against beef, carrot, turnip, flour. 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.
Roast Beef211 recipes
Beef Loaf175 recipes
Carrot Soup134 recipes
Corned Beef87 recipes