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Fish Hash

A dish of fish flakes and boiled potatoes cooked with butter and optional onion.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Fish Hash

Ingredients

Directions

Prepare

  1. In a bowl, combine fish flakes and cold boiled potatoes.

  2. Add butter and mix well.

Cook

  1. Heat a skillet over medium heat and add the mixture.

  2. Brown on both sides until crispy.

  3. Add chopped onion if desired and cook until softened.

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. Potato + oniontop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 recipes

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

  2. Fish + buttertop 12% of all pairs
    Smell alikemoderate
    Cooked together4,488 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  3. Potato + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  4. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Fish + potatotop 15% of all pairs
    Smell alikemoderate
    Cooked together134 recipes

    Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).

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

What each ingredient does

Cold boiled potatoes
Provide starch that binds the hash and crisps into a golden surface when browned.
Fish flakes
Supply the main protein and savory flavor of the hash.
Butter
Adds fat and flavor and helps the hash brown in the skillet.

The step that matters

Brown on both sides until crispy. The hash must be pressed and left undisturbed long enough for a crust to form. Moving it too early keeps it soft and prevents the browning that gives crispness and flavor.

Swap the onion

The recipe marks onion as optional. How well each one fits the dish's main ingredients (fish, potato, butter):

  1. Chivefits about as well
  2. Onionthe original
  3. Asparagusfits about as well
  4. Leekfits about as well

Fit is the average pairing score against fish, potato, 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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