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To Boil Mackerel

A boiled mackerel served with fennel, parsley, and butter sauce.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Fennel and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 625 recipes. Both carry myristicin, which smells spice, warm. The science ↓

To Boil Mackerel

Ingredients

Directions

Prepare

  1. Clean the mackerel inside and out.

  2. Wash the fish in vinegar and water, then let it dry slightly.

  3. In a fish kettle, add cold water and a handful of coarse sea salt.

Cook

  1. Bring the water to a gentle boil and add the mackerel.

  2. Cook for 15 to 20 minutes, watching for the eye to start and the tail to split.

  3. Remove the fish immediately to prevent breaking.

Serve

  1. Serve with fennel sauce, parsley, and butter, or a marinade.

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. Fennel + parsleytop 1% of all pairs
    Smell alikestrong
    Cooked together625 recipes

    Shared aroma: myristicin (spice, warm).

  2. Sauce + buttertop 15% of all pairs
    Smell alikelow
    Cooked together15,338 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Parsley + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together28,563 recipes

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

  4. Vinegar + parsleytop 16% of all pairs
    Smell alikemoderate
    Cooked together6,477 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  5. Vinegar + fenneltop 19% of all pairs
    Smell alikemoderate
    Cooked together505 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Sauce and butter 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

Mackerel
Is the main protein, cooked gently in simmering salted water until it turns opaque and flakes.
Vinegar
Added to the washing water, where it helps rinse and firm the fish surface.
Butter
Used in the sauce to add richness and a silky mouthfeel to the fish.

The step that matters

Remove the fish immediately to prevent breaking.. Mackerel is delicate, and overcooking in simmering water makes the flesh firm and then break apart, so timing the removal matters.

Swap the fennel

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

  1. Tarragonfits better
  2. Capersfits better
  3. Thymefits better
  4. Fennelthe original

Fit is the average pairing score against vinegar, sauce, parsley, butter. 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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