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To Boil Fresh Fish

A simple boiled fresh fish served with melted butter, chopped eggs, parsley, and optional walnut or mushroom ketchup.

From an old cookbook · modernised transcription
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Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

To Boil Fresh Fish

Ingredients

Directions

Prepare the fish

  1. Clean the fish thoroughly and rub it with coarse sea salt and black pepper.

Boil

  1. Wrap the fish in a towel and drop it into boiling water.

  2. Keep the water boiling rapidly.

  3. A large fish will take about 45 minutes, while a small one will take less time.

Serve

  1. Once cooked, place the fish on a dish.

  2. Serve with melted butter, chopped eggs, and parsley.

  3. Optionally, serve with walnut or mushroom ketchup.

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. Pepper + parsleytop 2% of all pairs
    Smell alikestrong
    Cooked together34,122 recipes

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

  2. Butter + mushroomtop 7% of all pairs
    Smell alikemoderate
    Cooked together12,525 recipes

    Shared aroma: trans-2-decenal (waxy, orange).

  3. Parsley + walnuttop 7% of all pairs
    Smell alikestrong
    Cooked together865 recipes

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

  4. Pepper + mushroomtop 11% of all pairs
    Smell alikemoderate
    Cooked together13,580 recipes

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

  5. Parsley + mushroomtop 11% of all pairs
    Smell alikemoderate
    Cooked together6,132 recipes

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

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

What each ingredient does

Butter
Melted butter adds richness and a smooth fat to balance the mild, lean fish.
Eggs
Chopped eggs add richness and a soft, creamy texture alongside the fish.

The step that matters

Keep the water boiling rapidly. Once the fish goes in, the water temperature drops. Keeping it at a strong boil helps the water return to heat quickly, so the fish cooks evenly and the flesh firms without falling apart.

Swap the walnut

The recipe marks walnut as optional. How well each one fits the dish's main ingredients (fish, pepper, butter, egg, parsley, ketchup, mushroom):

  1. Walnutthe original
  2. Peasfits about as well
  3. Beansfits about as well
  4. Chestnutfits less well

Fit is the average pairing score against fish, pepper, butter, egg, parsley, ketchup, mushroom. 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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