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Scrambled Eggs with Onions

A quick dish of scrambled eggs cooked with onions and served on toasted bread.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Scrambled Eggs with Onions

Ingredients

Directions

Cook the onions

  1. Fry the sliced onions in butter over medium heat until rich brown, but do not burn them.

Scramble and serve

  1. Break the eggs into the pan and scramble them with the onions.

  2. Add salt to taste.

  3. Serve immediately on heated slices of white 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. Onion + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Onion + breadtop 15% of all pairs
    Smell alikemoderate
    Cooked together8,676 recipes

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

  5. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

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

What each ingredient does

Onions
Browning in butter builds a sweet, deep flavour that carries the dish.
Butter
Fat for frying that helps the onions brown and adds richness.
Eggs
Set as they scramble, forming soft curds that give the dish its body.

The step that matters

Browning the onions without burning them. Medium heat lets sugars in the onions caramelise slowly into a rich brown flavour. Too much heat scorches the sugars first, leaving a bitter taste.

Swap the onion

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

  1. Asparagusfits better
  2. Leekfits better
  3. Chivefits better
  4. Onionthe original

Fit is the average pairing score against butter, egg, 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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