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Spanish Eggs

A tomato and egg dish served on buttered toast.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Tomato and pepper are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Spanish Eggs

Ingredients

Directions

Prepare the pan

  1. Rub the inside of a frying pan with a freshly cut onion.

Cook the tomato

  1. Melt the butter in the pan.

  2. Add the chopped tomato and cook for 5 minutes, stirring occasionally.

Add the eggs and serve

  1. Beat the eggs to break the yolks and add them to the hot tomato.

  2. Stir gently like poached eggs and serve on buttered toast.

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 + peppertop 7% of all pairs
    Smell alikemoderate
    Cooked together17,923 recipes

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

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

    Shared aroma: decanal (soap, orange peel).

  3. Butter + peppertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  4. Tomato + buttertop 22% of all pairs
    Smell alikemoderate
    Cooked together6,918 recipes

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

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

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

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

Tomato
Cooks down into a moist, slightly acidic base that the eggs set into.
Eggs
Set as they heat, binding the tomato and giving the dish its body.
Butter
Adds richness and fat that carries flavour and helps the tomato soften.

The step that matters

Stirring the eggs gently into the tomato. Eggs set when heated, so stirring too vigorously or over high heat can break them into small curds and make the dish watery. Gentle, low movement keeps the eggs in soft, loose pieces.

Swap the tomato

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

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

Fit is the average pairing score against butter, 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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