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Boiled Rock-fish

A boiled whole rock fish served with sliced hard‑boiled eggs, butter sauce, and parsley garnish.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Fish and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 4,488 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Boiled Rock-fish

Ingredients

Directions

Prepare and boil

  1. Clean the fish thoroughly and place it in a pot with enough cold water to cover it.

  2. If using a large fish, add ½ cup of coarse sea salt to the water; adjust for smaller fish.

  3. Boil the fish slowly for one hour until the meat is tender and easily separates from the bone.

Serve

  1. Serve the fish on a hot dish, garnished with sliced hard boiled eggs and drizzled with butter sauce.

  2. Add sprigs of parsley around the dish for decoration.

  3. For better flavor, consider steaming the fish using a fish-slice on your stove-boiler.

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. Fish + buttertop 12% of all pairs
    Smell alikemoderate
    Cooked together4,488 recipes

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

  2. Butter + saucetop 15% of all pairs
    Smell alikelow
    Cooked together15,338 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Butter + parsleytop 15% of all pairs
    Smell alikemoderate
    Cooked together28,563 recipes

    Shared aroma: trans-2-hexenal (green, leafy).

  4. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Fish + parsleytop 18% of all pairs
    Smell alikelow
    Cooked together2,341 recipes

    Shared aroma: 2,4-decadienal (seaweed).

Butter and sauce barely smell alike, yet cooks put them together in 15,338 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

Rockfish (in the method)
Forms the main body of the dish, becoming tender and flaky as it cooks gently in water.
Coarse sea salt
Seasons the cooking water and lightly flavors the fish as it poaches.

The step that matters

Boil the fish slowly. Gentle simmering cooks the flesh evenly and keeps it tender. A hard, rapid boil can toughen the proteins and break the fish apart before it is done.

Swap the parsley

How well each one fits the dish's main ingredients (fish, egg, butter, sauce):

  1. Capersfits better
  2. Tarragonfits about as well
  3. Parsleythe original
  4. Nutmegfits about as well

Fit is the average pairing score against fish, egg, butter, sauce. 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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