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Potato Dressing for Baked Fish

A smooth potato dressing made with mashed potatoes, cream, egg yolks, mustard, vinegar, and salt, used to accompany baked fish.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Potato and mustard are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,340 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Potato Dressing for Baked Fish

Ingredients

Directions

Prepare the potato base

  1. Press hot mashed potatoes through a sieve.

  2. Add cream and hard-cooked egg yolks.

  3. Rub until smooth.

  4. Press through the sieve again.

Season and cool

  1. Mix in salt, prepared mustard, and vinegar.

  2. Cool before using with fish.

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 + mustardtop 7% of all pairs
    Smell alikemoderate
    Cooked together1,340 recipes

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

  2. Mustard + vinegartop 7% of all pairs
    Smell alikemoderate
    Cooked together14,067 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Potato + creamtop 17% of all pairs
    Smell alikelow
    Cooked together2,481 recipes

    Shared aroma: 1-octen-3-one (mushroom, metallic).

  4. Potato + vinegartop 20% of all pairs
    Smell alikemoderate
    Cooked together1,608 recipes

    Shared aroma: beta-damascenone (apple, rose).

  5. Cream + eggtop 24% of all pairs
    Smell alikelow
    Cooked together42,166 recipes

    Shared aroma: acetic acid (sour, vinegar).

Cream and egg barely smell alike, yet cooks put them together in 42,166 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

Mashed potatoes
Provide the bulk and body that make the dressing thick and spoonable.
Cream
Adds moisture and richness, softening the texture of the potato.
Egg yolks
Add richness and a smooth, creamy texture through their fat and emulsifying proteins.
Vinegar
Adds acidity that brightens the flavour and cuts the richness of the dressing.
Prepared mustard
Adds sharp flavour that balances the creamy base.

The step that matters

Press the potatoes through the sieve while hot. Hot potatoes break down into a smooth, lump-free mash more easily. Pressing them while hot, then again after blending, keeps the dressing silky rather than gluey or grainy.

Swap the potato

How well each one fits the dish's main ingredients (cream, egg, mustard, vinegar):

  1. Horseradishfits better
  2. Shallotfits better
  3. Lettucefits better
  4. Potatothe original

Fit is the average pairing score against cream, egg, mustard, vinegar. 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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