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Spanish Omelet

A baked omelet with onions, tomatoes, red peppers, butter, milk, bread crumbs, and eggs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 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 ↓

Spanish Omelet

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Make the sauce

  1. Fry the onion until golden brown.

  2. Add tomatoes, red peppers, butter, and salt; simmer gently.

Make the omelet

  1. Soak bread crumbs in warm milk, then mix in melted butter, salt, and beaten egg yolks.

  2. Fold in whipped egg whites until stiff.

  3. Pour mixture into a well-buttered omelet pan, cover, and cook over moderate heat for 15 minutes.

  4. Remove the lid and place in the oven at 350°F (175°C) to brown.

Serve

  1. Transfer the omelet to a large platter garnished with parsley and pour the chili sauce over it.

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. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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

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

  4. Onion + tomatotop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

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

  5. Tomato + breadtop 10% of all pairs
    Smell alikemoderate
    Cooked together1,013 recipes

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

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

What each ingredient does

Eggs
Whipped whites give the omelet lift and airy structure, while yolks add richness and set the custard.
Bread crumbs
Soaked in milk, they add moisture and a tender texture to the omelet.
Tomatoes
Simmered down, they supply acidity and body to the sauce.
Red peppers
Simmered into the sauce, they add sweetness and flavor.
Onion
Fried until golden, it builds a sweet, savory base for the sauce.

The step that matters

Fold in whipped egg whites until stiff. Stiff whites trap air that makes the omelet rise and stay light. Overmixing deflates them, leaving a dense, flat result.

Swap the onion

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

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

Fit is the average pairing score against tomato, pepper, butter, milk, bread, egg. 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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