Why it works: Turnip and celery are a kitchen classic. They rank in the top 2% of all ingredient pairs, and 4,418 recipes mention both. Both carry coumarin, which smells sweet, hay. The science ↓
Onion Soup Mai G Re
Ingredients
Directions
Prepare the vegetables
Slice the onions, turnips, and celery.
Fry them in butter until browned, but not burnt.
Make the soup
Add the vegetables to boiling water with the herring or anchovies, anchovy sauce, mace, allspice, pepper, and salt.
Let the mixture stew until tender enough to pulp.
Boil the crumbs of French rolls in milk.
Pass the vegetables through a colander.
Return the mixture to the heat and stew until hot.
If not thick enough, add beaten yolks of raw eggs 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 aroma chemistry they share, and how many recipes mention both.
-
Turnip + celerytop 2% of all pairsAroma overlapmoderateMentioned together4,418 recipes
Shared aroma: coumarin (sweet, hay).
-
Celery + peppertop 5% of all pairsAroma overlapstrongMentioned together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Allspice + peppertop 5% of all pairsAroma overlapstrongMentioned together6,395 recipes
Shared aroma: estragole (anise, licorice).
-
Onion + turniptop 5% of all pairsAroma overlapstrongMentioned together7,585 recipes
Shared aroma: coumarin (sweet, hay).
-
Turnip + allspicetop 6% of all pairsAroma overlapstrongMentioned 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 body and sweet, savoury flavour of the soup.
- Butter
- Browns the vegetables, building deeper roasted flavour before they are simmered.
- French rolls
- Their crumbs, boiled in milk, thicken the soup and add body.
- Egg yolks (in the method)
- Enrich and thicken the soup when stirred in near the end.
The step that matters
Frying the vegetables in butter. Browning builds rich, roasted flavour through the Maillard reaction, but burnt butter and vegetables turn bitter, so heat must be moderate and watched closely.
Flavor stand-ins for the mace
How well each one fits the dish's main ingredients (onion, turnip, celery, butter, anchovy, allspice, pepper):
- Parsleybetter flavor fit
- Thymebetter flavor fit
- Capersbetter flavor fit
- 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. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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