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Salmon Sandwiches

A sandwich made with hard‑boiled egg yolks, canned salmon, and tomato ketchup.

From an old cookbook · modernised transcription
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Why it works: Tomato and bread are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 1,013 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Salmon Sandwiches

Ingredients

Directions

  1. Mince the yolks of the hard boiled eggs in a bowl.

  2. Add the drained salmon and homemade tomato ketchup to the eggs and mix until well combined.

  3. Spread the mixture on slices of bread.

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. Tomato + breadtop 10% of all pairs
    Smell alikemoderate
    Cooked together1,013 recipes

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

  2. Egg + breadtop 13% of all pairs
    Smell alikemoderate
    Cooked together22,662 recipes

    Shared aroma: (e)-2-octenal (fatty, green).

  3. Egg + salmontop 16% of all pairs
    Smell alikemoderate
    Cooked together3,485 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Salmon + breadtop 19% of all pairs
    Smell alikelow
    Cooked together941 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Salmon + tomatotop 19% of all pairs
    Smell alikelow
    Cooked together1,439 recipes

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

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

What each ingredient does

Eggs
Yolks mash into a creamy base that binds the salmon into a spreadable filling.
Salmon
Provides the main protein and flaky texture of the filling.
Tomato ketchup
Adds moisture, sweetness and acidity to the filling.

Swap the tomato

How well each one fits the dish's main ingredients (egg, salmon, ketchup, bread):

  1. Horseradishfits better
  2. Chivefits better
  3. Asparagusfits better
  4. Tomatothe original

Fit is the average pairing score against egg, salmon, ketchup, bread. 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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