Why it works: Onion and turnip 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
Make the stock
Stew the knuckle of veal with the onion, sweet herbs, and mace in 6 quarts of water for 5-6 hours.
Cover tightly and let it cool in a cool place.
Before warming, remove the fat and sediment.
Finish the soup
Slice the turnips into small pieces and stew them in the gravy until tender.
Add the cream, flour, and butter, and season with white pepper.
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.
-
Onion + turniptop 5% of all pairsSmell alikestrongCooked together7,585 recipes
Shared aroma: coumarin (sweet, hay).
-
Turnip + flourtop 7% of all pairsSmell alikestrongCooked together2,874 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Mace + white peppertop 9% of all pairsSmell alikemoderateCooked together1,695 recipes
Shared aroma: myrcene (balsamic, herbaceous).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Turnips
- Soften into tender pieces that give the soup its body and mild sweetness.
- Cream
- Adds richness and a smooth, silky texture to the finished soup.
- Flour
- Thickens the soup gently so it has a fuller body.
- Butter
- Adds fat for a rounder flavour and smoother mouthfeel.
- Knuckle of veal
- Releases gelatin and flavour into the water, forming the body of the gravy.
The step that matters
Removing the fat and sediment before warming. Fat and sediment left in the cooled stock can make the soup greasy and cloudy. Skimming the solidified fat and leaving the sediment behind gives a cleaner, clearer base.
Swap the white pepper
How well each one fits the dish's main ingredients (veal, onion, mace, turnip, cream, flour, butter):
- Nutmegfits better
- Capersfits better
- Parsleyfits better
- White pepperthe original
Fit is the average pairing score against veal, onion, mace, turnip, cream, 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.
More turnip soup recipes
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.

Veal Patties50 recipes
Beef, Mutton, or Veal Broth6 recipes
Tomato Soup526 recipes
Brown Bread461 recipes