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Sardine Sandwiches

A sandwich made with pounded sardines, egg yolks, butter, and lemon juice spread on buttered bread.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Sardine Sandwiches

Ingredients

Directions

Prepare the sardines

  1. Drain all the oil from the sardines.

  2. Place the sardines in boiling water to remove grease.

  3. Dry the sardines with a cloth.

  4. Scrape away the skin.

Make the filling

  1. Pound the sardines in a mortar.

  2. Mix the pounded sardines with the egg yolks, butter, and lemon juice until well combined.

Assemble

  1. Spread the mixture on thin slices of buttered 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. Butter + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

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

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

  3. Butter + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  4. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

Egg and lemon barely smell alike, yet cooks put them together in 44,316 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

Sardines
Provide the main savory, oily flavor and the bulk of the filling.
Hard boiled egg yolks
Add richness and a creamy, binding texture to the pounded filling.
Butter
Adds fat for richness and a smoother, spreadable texture.
Lemon juice
Adds acidity that brightens the fish flavor and cuts its richness.

The step that matters

Pound the sardines until smooth before mixing. Thoroughly breaking down the fish gives an even, spreadable paste. Large pieces left behind make the filling uneven and hard to spread on thin bread.

Swap the lemon

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

  1. Figfits better
  2. Vanillafits about as well
  3. Datesfits about as well
  4. Lemonthe original

Fit is the average pairing score against egg, butter, 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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