Why it works: Turnip and celery are a kitchen classic. They rank in the top 2% of all ingredient pairs, and cooks put them together in 4,418 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Onion Soup Maigre
Ingredients
Directions
Prepare the vegetables
Slice the onions, turnips, and celery.
In a pot, fry the vegetables in butter until browned but not burnt.
Make the soup
Add the vegetables to boiling water along with the herring or anchovies, anchovy sauce, mace, allspice, pepper, and salt.
Let the mixture stew until tender enough to pulp.
Boil the crumb of the French rolls in milk.
Pass the mixture through a colander with the boiled roll crumbs.
Return the soup to the heat and simmer until hot.
If the soup is not thick enough, beat in the raw egg yolks just before serving.
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 + celerytop 2% of all pairsSmell alikemoderateCooked together4,418 recipes
Shared aroma: coumarin (sweet, hay).
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Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Allspice + peppertop 5% of all pairsSmell alikestrongCooked together6,395 recipes
Shared aroma: estragole (anise, licorice).
-
Onion + turniptop 5% of all pairsSmell alikestrongCooked together7,585 recipes
Shared aroma: coumarin (sweet, hay).
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Turnip + allspicetop 6% of all pairsSmell alikestrongCooked together445 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
- Onions
- Provide the main sweet, savoury body of the soup as they cook down.
- Butter
- Browns the vegetables first, adding fat and roasted flavour.
- French rolls
- Their crumb, boiled in milk, thickens the pulped soup.
- Egg yolks
- Enrich and thicken the soup when beaten in before serving.
The step that matters
Frying the vegetables in butter. Vegetables should brown without burning. Scorched butter and sugars turn the soup bitter and dark, while gentle browning builds a deeper, sweeter flavour.
Swap the mace
How well each one fits the dish's main ingredients (onion, turnip, celery, butter, anchovy, allspice, pepper):
- Parsleyfits better
- Thymefits better
- Capersfits better
- Macethe original
Fit is the average pairing score against onion, turnip, celery, butter, anchovy, allspice, pepper. 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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