Why it works: Flour and ketchup are a kitchen classic. They rank in the top 13% of all ingredient pairs, and 2,435 recipes mention both. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Oyster Soup
Ingredients
Directions
Prepare the oysters
Open the oysters carefully.
Strain the liquor from the oysters.
Remove the gills from the oysters.
Place the gills in a bowl with the strained liquor.
Make the soup
Simmer the gills in the veal stock for 20 minutes.
Strain the gills after simmering.
Heat the oyster liquor in a pan.
Plump the oysters in the heated liquor without boiling.
Combine the veal stock, mace, and cayenne in a separate pot.
Add the oyster liquor to the pot.
Serve
Place the oysters in a tureen.
Pour the hot soup over the oysters 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.
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Flour + ketchuptop 13% of all pairsAroma overlapmoderateMentioned together2,435 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Oyster + ketchuptop 15% of all pairsAroma overlapmoderateMentioned together318 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Pepper + macetop 16% of all pairsAroma overlaplowMentioned together12,257 recipes
Shared aroma: myristicin (spice, warm).
-
Veal + macetop 18% of all pairsAroma overlaplowMentioned together3,761 recipes
Shared aroma: alpha-pinene (pine, turpentine).
-
Flour + peppertop 19% of all pairsAroma overlapmoderateMentioned together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Pepper and mace share little aroma chemistry, yet 12,257 recipes mention both: they likely 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
- Oysters
- Provide the main flavour and a tender, briny texture when gently plumped.
- Veal stock
- Forms the savoury body of the soup and carries the other flavours.
- Mace
- Adds a warm, aromatic spice note to the soup.
The step that matters
Plump the oysters without boiling. Boiling makes the oyster proteins contract, so the oysters turn tough, rubbery and shrunken. Heating the liquor just until the oysters plump keeps them tender and juicy.
Flavor stand-ins for the mace
How well each one fits the dish's main ingredients (oyster, veal, flour, pepper, ketchup):
- Parsleybetter flavor fit
- Celerybetter flavor fit
- Marjorambetter flavor fit
- Macethe original
Fit is the average pairing score against oyster, veal, flour, pepper, ketchup. 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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