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 ↓
Vegetable Soup
Ingredients
Directions
Prepare the soup
Bring 3 quarts of water to a boil in a porcelain kettle.
Add the chopped onions, carrots, and turnips.
Simmer for 30 minutes.
Stir in the chopped cabbage and stewed tomatoes, along with a bunch of sweet herbs.
Let the soup boil for 20 minutes.
Strain the soup through a sieve, rubbing the vegetables through.
Finish and serve
In a separate bowl, cream together 2 tablespoons of butter and 1 tablespoon of flour.
Season the soup with salt, pepper, and 1 teaspoon of sugar.
If using, stir in ½ cup of sweet cream and the butter‑flour mixture.
Bring the soup to a boil again before serving.
Serve with fried bread chips or poached eggs.
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.
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Carrot + turniptop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
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Turnip + cabbagetop 2% of all pairsSmell alikestrongCooked together897 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).
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Cabbage + peppertop 5% of all pairsSmell alikemoderateCooked together4,081 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Carrot + peppertop 6% of all pairsSmell alikestrongCooked together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Onions
- Build the flavour base of the soup as they soften and release their sweetness.
- Tomatoes
- Add acidity and body, giving the soup its color and tangy depth.
- Butter and flour
- Creamed together and stirred in, they thicken the soup and add richness.
- Sweet cream
- Adds richness and a smoother, silkier texture to the finished soup.
The step that matters
Stirring in the butter-flour mixture. Flour added directly to hot liquid clumps; creaming it with butter first lets it disperse smoothly. The soup must then be brought back to a boil so the starch thickens fully and tastes cooked rather than raw.
Swap the tomato
How well each one fits the dish's main ingredients (onion, carrot, turnip, cabbage, butter, flour, pepper):
- Leekfits better
- Parsnipfits better
- Okrafits better
- Tomatothe original
Fit is the average pairing score against onion, carrot, turnip, cabbage, butter, flour, 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.
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