Why it works: Turnip and parsnip match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 590 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
White Soup
Ingredients
Directions
Prepare the vegetables
Wash and peel the vegetables, then cut them into pieces.
Make the soup
Simmer the vegetables in water with salt and butter until soft.
Rub the mixture through a sieve or colander back into the saucepan.
Add the milk and heat gently.
Mix the flour with a little cold water or milk, then add to the soup.
Let the soup simmer for about 10 minutes and serve with diced fried bread.
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 + parsniptop 1% of all pairsSmell alikestrongCooked together590 recipes
Shared aroma: coumarin (sweet, hay).
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Turnip + celerytop 2% of all pairsSmell alikemoderateCooked together4,418 recipes
Shared aroma: coumarin (sweet, hay).
-
Celery + parsniptop 3% of all pairsSmell alikestrongCooked together561 recipes
Shared aroma: myristicin (spice, warm).
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Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + turniptop 5% of all pairsSmell alikestrongCooked together7,585 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
- Potatoes
- Starch that breaks down during simmering, thickening the soup and giving it body.
- Flour or cornflour
- Starch that thickens the soup when mixed smoothly with cold liquid before adding.
- Butter
- Adds fat for richness and a smooth mouthfeel to the finished soup.
- Milk
- Adds creaminess and mild sweetness, lightening the colour of the soup.
The step that matters
Adding the flour mixture. Flour added directly to hot liquid forms lumps, so it should be mixed with a little cold water or milk first. Starch then thickens the soup evenly as it simmers.
Swap the onion
How well each one fits the dish's main ingredients (turnip, potato, celery, parsnip, milk, flour, butter):
- Leekfits better
- Carrotfits better
- Beetrootfits better
- Onionthe original
Fit is the average pairing score against turnip, potato, celery, parsnip, milk, flour, butter. 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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