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Oyster Soup

A soup made with oysters, fish stock, egg yolks, butter, anchovy essence, lemon juice, cayenne, and optional roux.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 12 ingredients
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Why it works: Lemon and arrowroot match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and 553 recipes mention both. Both carry coumarin, which smells sweet, hay. The science ↓

Oyster Soup

Ingredients

Directions

Prepare the stock

  1. Bared the oysters and boil them in fish stock for 20 minutes.

  2. Pound the hard-boiled egg yolks with butter, salt, white pepper, anchovy essence, and lemon juice.

Make the soup

  1. Strain the stock and stir in the pounded mixture and oyster liquor.

  2. Simmer for a few minutes, adjusting salt, pepper, and adding cayenne.

  3. Add the oysters and beaten raw egg yolks, stirring gently without boiling until thick and smooth.

  4. Serve very hot, optionally thickening with white roux or arrowroot mixed with milk or cream before adding oysters.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Lemon + arrowroottop 4% of all pairs
    Aroma overlapstrong
    Mentioned together553 recipes

    Shared aroma: coumarin (sweet, hay).

  2. Oyster + anchovytop 8% of all pairs
    Aroma overlapmoderate
    Mentioned together603 recipes

    Shared aroma: decanal (soap, orange peel).

  3. Oyster + fishtop 9% of all pairs
    Aroma overlapmoderate
    Mentioned together496 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  4. Fish + anchovytop 9% of all pairs
    Aroma overlaplow
    Mentioned together637 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Fish + buttertop 12% of all pairs
    Aroma overlapmoderate
    Mentioned together4,488 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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 tender pieces that give the soup its character.
Raw egg yolks
Thicken the soup as they gently set, giving it a smooth, rich texture.
Hard-boiled egg yolks
Pounded into the stock to add body and a rich, creamy mouthfeel.
Butter
Adds fat for richness and a smooth, silky mouthfeel.
Fish stock
Forms the liquid base that carries the soup's savoury flavour.

The step that matters

Adding the raw egg yolks. Egg yolks thicken when heated gently but curdle if they boil. Stir steadily off a rolling boil so the soup turns thick and smooth rather than grainy.

Flavor stand-ins for the arrowroot

The recipe marks arrowroot as optional. How well each one fits the dish's main ingredients (oyster, fish, egg, butter, white pepper, anchovy, lemon):

  1. Shallotbetter flavor fit
  2. Asparagusbetter flavor fit
  3. Cucumberbetter flavor fit
  4. Arrowrootthe original

Fit is the average pairing score against oyster, fish, egg, butter, white pepper, anchovy, lemon. 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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