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Walled Oysters

A baked oyster casserole with mashed potatoes, oyster liquor, cream, butter, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

Walled Oysters

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the base

  1. Line a pudding pan with mashed potatoes and glaze it with the beaten egg.

  2. Bake in a 400°F (200°C) oven until heated through and lightly browned.

Make the sauce

  1. In a saucepan, bring the oyster liquor to a boil.

  2. Season and boil for four minutes.

  3. Remove the oysters and add cream, butter, and enough flour to thicken the liquor.

  4. Boil until thick, then combine with the oysters and potato mixture.

  5. Serve immediately.

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 their aromas overlap, and how often cooks already put them together.

  1. Cream + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  2. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Oyster + buttertop 12% of all pairs
    Smell alikemoderate
    Cooked together8,184 recipes

    Shared aroma: 2,6-nonadienal (cucumber, green).

  4. Potato + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

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

  5. Egg + oystertop 14% of all pairs
    Smell alikemoderate
    Cooked together4,103 recipes

    Shared aroma: 2-nonenal (fatty, green).

Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they 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

Eggs
Glaze the potato crust, giving it a golden, browned surface when baked.
Flour
Thickens the oyster liquor into a smooth sauce as it boils.
Butter
Adds richness and a silky mouthfeel to the sauce.
Cream
Adds richness and body to the sauce, softening its flavor.
Oyster liquor
Forms the flavorful liquid base of the sauce.

The step that matters

Boil the sauce until thick. Flour only thickens when it is boiled long enough for its starch granules to swell and set. Stopping early leaves a thin sauce that runs out of the casserole.

Swap the potato

How well each one fits the dish's main ingredients (egg, oyster, cream, butter, flour):

  1. Shallotfits better
  2. Chivefits about as well
  3. Asparagusfits about as well
  4. Potatothe original

Fit is the average pairing score against egg, oyster, cream, butter, flour. 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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