Why it works: Turnip and leek match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,046 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Vegetable Stock
Ingredients
Directions
Prepare the barley
Wash the pearl barley in several waters.
Scald the barley in boiling water for a few minutes.
Make the stock
In a large pot, combine the vegetable liquor, sliced turnip, carrot, parsnip, and scalded barley.
In another saucepan, melt the butter.
Add the sliced onion, leek, minced celery, and sliced mushrooms to the butter.
Add the herbs and white peppercorns.
Cook covered for 10 minutes, shaking often to avoid browning.
Transfer the cooked vegetables to the pot with the liquor.
Before the first boil, add the coarse sea salt and a little white sugar.
Boil for 2 hours, stirring often.
Skim off any scum.
Strain the stock for use as needed.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Turnip + leektop 1% of all pairsSmell alikestrongCooked together1,046 recipes
Shared aroma: coumarin (sweet, hay).
-
Turnip + parsniptop 1% of all pairsSmell alikestrongCooked together590 recipes
Shared aroma: coumarin (sweet, hay).
-
Parsnip + leektop 1% of all pairsSmell alikestrongCooked together165 recipes
Shared aroma: coumarin (sweet, hay).
-
Carrot + parsniptop 1% of all pairsSmell alikestrongCooked together1,097 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Barley + leektop 1% of all pairsSmell alikestrongCooked together142 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Vegetable liquor
- Forms the liquid base that carries the flavour of the stock.
- Pearl barley
- Thickens the stock slightly and adds body as it cooks.
- Butter
- Carries the aromatic vegetables and adds a rich, rounded flavour.
- Onion
- Adds sweetness and savoury depth as it cooks down.
- Turnip
- Contributes earthy sweetness and body to the stock.
The step that matters
Cook covered, shaking often. Shaking the pan during the 10-minute covered cooking keeps the butter and vegetables from browning. Browning would turn the stock dark and bitter instead of clear and mild.
Swap the onion
How well each one fits the dish's main ingredients (beans, turnip, carrot, parsnip, barley, butter, leek):
- Beetrootfits better
- Lettucefits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against beans, turnip, carrot, parsnip, barley, butter, leek. 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
Cream of Celery Soup113 recipes
Mushroom Soup60 recipes
Turnip Soup43 recipes