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Sardine Omelet

A fried omelet with sardines and green onion.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Sardine Omelet

Ingredients

Directions

Prepare

  1. Beat the eggs separately until light.

  2. Fry the chopped onion in oil until soft.

Cook the omelet

  1. Add the sardines and beaten eggs to the pan, season with salt and pepper, and cook until browned on one side.

  2. To flip, place a plate over the omelet, turn it onto the plate, then slide it back into the pan to brown the other side.

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. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

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

  2. Egg + peppertop 33% of all pairs
    Smell alikelow
    Cooked together50,580 recipes

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

  3. Egg + oniontop 34% of all pairs
    Smell alikelow
    Cooked together23,333 recipes

    Shared aroma: 2,4-decadienal (seaweed).

Egg and pepper barely smell alike, yet cooks put them together in 50,580 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

Eggs
Set into a structure that holds the sardines and onion together as the omelet cooks.
Sardines
Provide the main protein and rich, savory flavor of the omelet.
Green onion
Adds mild sharpness and aroma once softened in oil.

The step that matters

Flipping the omelet. Eggs set quickly, so the omelet can tear or stick if flipped too late or without enough oil. Turning it onto a plate and sliding it back lets the second side brown gently while keeping the layers intact.

Swap the onion

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

  1. Capsicumfits better
  2. Spinachfits better
  3. Asparagusfits better
  4. Onionthe original

Fit is the average pairing score against egg, pepper. 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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