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To Fry Haddocks in Sauce

A haddock dish fried in a butter‑flour sauce with onions, pepper, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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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 Fry Haddocks in Sauce

Ingredients

Directions

Prepare the fish

  1. Skin and remove the heads from the haddocks, then cut each into four pieces and wash them clean.

Make the sauce

  1. In a frying pan, melt the butter and mix in the flour until browned.

  2. Add the minced onions, pepper, and salt to the browned butter.

  3. Pour in enough boiling water to nearly cover the fish pieces and let it boil.

Cook and serve

  1. Add the fish to the pan.

  2. Cook one side until done, then turn to cook the other side.

  3. Serve hot, pouring the sauce over the fish and garnishing with parsley.

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. Onion + parsleytop 9% of all pairs
    Smell alikemoderate
    Cooked together25,843 recipes

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

  3. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Flour + parsleytop 12% of all pairs
    Smell alikemoderate
    Cooked together16,675 recipes

    Shared aroma: isobutyraldehyde (malty, 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

Haddock
Forms the main body of the dish, cooking to a flaky, tender texture.
Flour
Combined with butter and browned, it thickens the sauce and adds toasty flavour.
Butter
Carries the flour and onions, adding richness and browning flavour to the sauce.
Onions
Soften in the sauce, adding sweetness and savoury depth.

The step that matters

Browning the butter and flour. Cooking the flour in butter until browned builds the sauce's nutty flavour and colour, but if it burns it turns bitter and can't be rescued. Keep the heat moderate and stir constantly.

Swap the onion

How well each one fits the dish's main ingredients (haddock, butter, flour, pepper, parsley):

  1. Shallotfits better
  2. Chivefits better
  3. Potatofits better
  4. Onionthe original

Fit is the average pairing score against haddock, butter, flour, pepper, parsley. 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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