Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Puree of Vegetable Soup
Ingredients
Directions
Prepare the base
Lightly fry the diced carrots, turnips, onions, and ham or bacon in a pot.
Mix the flour with a little water to form a smooth paste.
Add the flour paste to the pot.
Pour in the stock or broth.
Cook the soup
Add the parsley and potatoes.
Add the milk.
Bring the mixture to a boil.
Cook for 20 minutes.
Season with salt, pepper, and sugar.
Strain the soup through a fine sieve, discarding the parsley and ham.
Return the strained soup to the pot.
Bring to a boil again.
Skim off any foam.
Serve hot with toasted 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.
-
Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Carrot + turniptop 1% of all pairsSmell alikestrongCooked together8,002 recipes
Shared aroma: coumarin (sweet, hay).
-
Turnip + parsleytop 2% of all pairsSmell alikestrongCooked together2,842 recipes
Shared aroma: coumarin (sweet, hay).
-
Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + potatotop 4% of all pairsSmell alikestrongCooked together3,107 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Flour
- Forms a smooth paste that thickens the stock and gives the puree body.
- Potatoes
- Break down during cooking to add starch, creaminess and body to the puree.
- Milk
- Adds richness and a softer, creamier texture to the finished soup.
- Carrots
- Add sweetness, colour and body as they soften and blend into the puree.
- Turnips
- Contribute earthy flavour and body as they soften into the puree.
- Onion
- Builds savoury depth and aroma when lightly fried at the start.
The step that matters
Adding the flour paste to the pot. Flour lumps form if it is added dry or unmixed, so mixing it smoothly with water first lets it disperse evenly. Simmering the soup afterwards lets the starch fully cook, which removes the raw floury taste and thickens the liquid evenly.
Swap the onion
How well each one fits the dish's main ingredients (carrot, turnip, ham, flour, parsley, potato, milk):
- Parsnipfits better
- Leekfits better
- Beetrootfits better
- Onionthe original
Fit is the average pairing score against carrot, turnip, ham, flour, parsley, potato, milk. 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.
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.
Brown Bread461 recipes
Potato Croquettes255 recipes
Carrot Soup134 recipes
White Bread80 recipes