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 ↓
Julienne Soup
Ingredients
Directions
Prepare
Shred the carrots, turnips, parsnip, and leek.
Place the shredded vegetables in a saucepan.
Make the soup
Add butter, salt, and sugar, cover, and cook for 10 minutes in summer or 15 minutes in winter, shaking occasionally.
Add chopped lettuce and celery, and cook for another 4-5 minutes.
Gradually add boiling water and pepper, then simmer for 1 hour.
If in season, add green peas, French beans, and asparagus, and simmer for an additional 30 minutes.
Before serving, stir in 1 tablespoon of butter for a rich finish.
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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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).
-
Carrot + celerytop 1% of all pairsSmell alikestrongCooked together10,173 recipes
Shared aroma: myristicin (spice, warm).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Carrots
- Provide sweetness, body and colour to the broth as they soften.
- Turnips
- Add mild sweetness and a tender, starchy body to the soup.
- Leek
- Contributes a mild onion-like aroma that deepens as it cooks.
- Butter
- Adds fat for a rounder mouthfeel and rich flavour at the finish.
- Lettuce
- Adds moisture and a soft, delicate vegetable flavour as it wilts.
The step that matters
Covered cooking of the vegetables in butter. Cooking the shredded vegetables covered in butter, salt and sugar lets them soften in their own moisture without browning. Keeping the lid on and stirring occasionally prevents scorching and draws out natural sweetness, which sets the flavour base for the whole soup.
Swap the celery
How well each one fits the dish's main ingredients (carrot, turnip, parsnip, leek, butter, sugar, lettuce):
- Capersfits about as well
- Parsleyfits about as well
- Thymefits about as well
- Celerythe original
Fit is the average pairing score against carrot, turnip, parsnip, leek, butter, sugar, lettuce. 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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