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Sardine Sandwiches

A sandwich made with oil sardines, hard‑cooked eggs, lemon juice, mustard, salt, bread, and lettuce.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Mustard and lettuce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,356 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Sardine Sandwiches

Ingredients

Directions

  1. Place sardines in a bowl with all the oil from the can.

  2. Remove all hairbones from the sardines.

  3. Chop the hard-cooked eggs and add them to the bowl with the sardines.

  4. Add mustard, salt, and lemon juice and mix well.

  5. Spread the mixture on slices of bread and add lettuce leaves between the slices.

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. Mustard + lettucetop 1% of all pairs
    Smell alikestrong
    Cooked together1,356 recipes

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

  2. Lemon + lettucetop 9% of all pairs
    Smell alikestrong
    Cooked together1,559 recipes

    Shared aroma: trans-2-hexenal (green, leafy).

  3. Lemon + mustardtop 11% of all pairs
    Smell alikestrong
    Cooked together3,816 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

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

  5. Bread + lettucetop 15% of all pairs
    Smell alikemoderate
    Cooked together602 recipes

    Shared aroma: nonanal (fat, citrus).

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

What each ingredient does

Oil sardines
Provide the main protein and rich, savory flavor of the filling.
Hard cooked eggs
Add body and a creamy texture that binds the sardine filling.
Lemon juice
Adds acidity that brightens the rich fish and balances its flavor.
Dry mustard
Adds sharp, pungent aroma that cuts through the oily richness of the fish.

Swap the lemon

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

  1. Avocadofits better
  2. Lemonthe original
  3. Limefits about as well
  4. Figfits about as well

Fit is the average pairing score against egg, mustard, bread, lettuce. 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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