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Baked Halibut or Salmon

A baked fish served with a ketchup and pungent sauce, garnished with parsley and currant jelly.

From an old cookbook · modernised transcription
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Why it works: Ketchup and sauce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,099 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Baked Halibut or Salmon

Oven, in the book's wordsA hot oven

Ingredients

Directions

The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Soak the fish in cold water with a little coarse sea salt for 1 hour.

  2. Preheat the oven to 400°F (200°C).

  3. Place a griddle over a dripping pan with a little hot water.

Bake and baste

  1. Bake the fish for about 30 minutes if small, or 1 hour if large.

  2. Butter the top of the fish just before it is done and brown it nicely.

Make the sauce and serve

  1. In a separate bowl, mix the gravy from the dripping pan with ketchup, pungent sauce, and lemon juice.

  2. Thicken the sauce with brown flour moistened with cold water.

  3. Serve the fish with the sauce, garnished with parsley and currant jelly.

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. Ketchup + saucetop 1% of all pairs
    Smell alikestrong
    Cooked together1,099 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  2. Lemon + parsleytop 1% of all pairs
    Smell alikestrong
    Cooked together14,037 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Ketchup + flourtop 13% of all pairs
    Smell alikemoderate
    Cooked together2,435 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

Whole halibut or salmon
Forms the main body of the dish, cooked gently by baking until flaky.
Butter
Adds richness and helps the top brown nicely when spread over the fish near the end.
Brown flour
Thickens the sauce so it clings to the fish instead of running thin.
Lemon juice
Adds acidity that brightens the sauce and balances its richness.
Ketchup
Contributes sweetness and tomato acidity to the sauce.

The step that matters

Butter the top just before the fish is done. Butter added too early can burn or brown unevenly before the fish cooks through. Adding it near the end lets the surface brown evenly while the interior finishes gently, keeping the fish moist.

Swap the currant

How well each one fits the dish's main ingredients (salmon, butter, ketchup, sauce, lemon, flour, parsley):

  1. Limefits better
  2. Avocadofits better
  3. Orangefits better
  4. Currantthe original

Fit is the average pairing score against salmon, butter, ketchup, sauce, lemon, flour, 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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