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To Boil Rock Fish

A boiled rock fish served with horse‑radish, butter, parsley, and optional anchovy butter, accompanied by fried roe and liver.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 13 ingredients
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Why it works: Fish and liver work together. They rank in the top 9% of all ingredient pairs, and 79 recipes mention both. Both carry 2-nonenal, which smells fatty, green. The science ↓

The recipe

Ingredients

Contains: milk, fish (auto-detected from the ingredients and method; we can miss things, so check labels)

Directions

Cook the fish

  1. Clean the rock fish thoroughly and place it in a fish kettle with cold water and coarse sea salt.

  2. Boil gently and skim the surface well.

  3. Once cooked, drain the water and place the fish on a serving dish.

Serve

  1. Garnish with scraped horse‑radish.

  2. Melt butter and mix with chopped parsley, or prepare anchovy butter as an alternative.

  3. Fry the roe and liver separately and serve in small dishes.

Make the leftovers

  1. For leftovers, pick the fish into small pieces and place in a stew pan with ½ cup water, a good lump of butter, salt, lemon pickle, and pepper vinegar.

  2. Heat over the fire until hot and serve.

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. Fish + livertop 9% of all pairs
    Aroma overlapmoderate
    Mentioned together79 recipes

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

  2. Horse + radishtop 3% of all pairs
    Aroma overlapmoderate
    Mentioned together528 recipes

    Shared aroma: 1-hexanol (resin, flower).

  3. Fish + anchovytop 3% of all pairs
    Aroma overlapmoderate
    Mentioned together615 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

  4. Anchovy + roetop 4% of all pairs
    Aroma overlapmoderate
    Mentioned together64 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

  5. Horse + anchovytop 4% of all pairs
    Aroma overlapstrong
    Mentioned together35 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Rock fish
Forms the main body of the dish, cooked gently in water until flaky.
Butter
Adds richness and a smooth, moist mouthfeel to the fish and leftovers.
Roe and liver
Fried separately, they add rich flavour and a crisp, savoury contrast.
Horse-radish
Adds sharp, pungent heat that cuts through the richness of the fish and butter.

The step that matters

Boil gently and skim the surface. Vigorous boiling breaks delicate fish apart and makes the surface cloudy. Gentle heat keeps the flesh moist and firm, and skimming removes foam and impurities for a cleaner flavour.

Flavor stand-ins for the radish

How well each one fits the dish's main ingredients (fish, horse, butter, parsley, anchovy, roe, liver):

  1. Potatobetter flavor fit
  2. Shallotbetter flavor fit
  3. Onionbetter flavor fit
  4. Radishthe original

Fit is the average pairing score against fish, horse, butter, parsley, anchovy, roe, liver. 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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