Why it works: Turnip and onion match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 7,585 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Turnip 'soup
Ingredients
Directions
Melt the butter in a stewpan over low heat.
Wash, drain, and slice the turnips and onions very thin.
Add the turnips and onions to the butter with ½ cup of stock and stew gently for 1 hour.
Add the remaining stock and simmer for another hour.
Rub the mixture through a fine sieve.
Return it to the stewpan. Heat without boiling.
Serve very hot.
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.
-
Turnip + oniontop 5% of all pairsSmell alikestrongCooked together7,585 recipes
Shared aroma: coumarin (sweet, hay).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + turniptop 25% of all pairsSmell alikemoderateCooked together4,100 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
- Turnips
- Provide the main body and flavour of the soup as they soften during slow stewing.
- Onions
- Break down during stewing to add sweetness and depth to the soup.
- Butter
- Adds richness and fat, helping the vegetables soften and carry flavour.
- Stock
- Provides the liquid that cooks the vegetables and forms the soup base.
The step that matters
Heat without boiling. Boiling a puréed soup can cause it to separate and turn grainy, and can scorch dairy or fat, so it should be heated gently just until hot.
Swap the turnip
How well each one fits the dish's main ingredients (butter, onion):
- Potatofits better
- Chivefits better
- Leekfits better
- Turnipthe original
Fit is the average pairing score against butter, onion. 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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