Why it works: Turnip and leek match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,046 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Potage Ci 1’ Italienne, H. LA Purde De Lentilles
Ingredients
Directions
Make the vegetable base
Combine the onions, carrots, parsnips, cabbage, turnips, celery, leeks, parsley roots and peas in a stewpot.
Cover with water.
Boil slowly.
Make the lentil purée
In another pot, boil the lentils in water.
Add 1/3 cup of fine oil and a little salt.
Once the lentils are cooked, strain them.
Dilute the strained lentils with the vegetable broth.
Combine and serve
Combine the strained broth and lentils in the stewpot.
Add more oil and salt as needed.
Serve the soup thick, pouring the lentil purée on top.
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 + leektop 1% of all pairsSmell alikestrongCooked together1,046 recipes
Shared aroma: coumarin (sweet, hay).
-
Parsnip + turniptop 1% of all pairsSmell alikestrongCooked together590 recipes
Shared aroma: coumarin (sweet, hay).
-
Parsnip + leektop 1% of all pairsSmell alikestrongCooked together165 recipes
Shared aroma: coumarin (sweet, hay).
-
Carrot + parsniptop 1% of all pairsSmell alikestrongCooked together1,097 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Lentils
- Break down into a thickening purée that gives the soup body and creaminess.
- Fine oil
- Adds fat for smooth mouthfeel and carries flavour through the soup.
- Onions
- Form a sweet, aromatic base that builds flavour for the broth.
- Carrots
- Contribute natural sweetness and colour to the vegetable broth.
- Leeks
- Add a mild onion-like aroma and savoury depth to the broth.
The step that matters
Strain the cooked lentils. Lentils must be fully cooked before straining, since undercooked lentils stay firm and will not form a smooth purée that blends into the soup.
Swap the onion
How well each one fits the dish's main ingredients (carrot, parsnip, cabbage, turnip, celery, leek, parsley):
- Beetrootfits better
- Lettucefits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against carrot, parsnip, cabbage, turnip, celery, leek, parsley. 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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