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Tortilla Española

A Spanish omelette made with potatoes, onions, eggs, garlic, and oil.

From the Wikibooks Cookbook · 5 ingredients
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Why it works: Garlic and onion match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 29,058 recipes mention both. Both carry furaneol, which smells caramel, strawberry. The science ↓

Tortilla Española

Ingredients

Directions

Prepare the potatoes

  1. Heat the garlic and a small amount of oil in a 10‑inch frying pan until the garlic is browned.

  2. Add the rest of the oil and heat to about 375°F (200°C).

  3. Cube or slice the potatoes and coarsely chop the onion; add to the hot oil and fry until brown.

  4. Strain the potatoes, onions, and garlic and reserve about 2 tablespoons of oil.

Make the omelette

  1. Beat the eggs in a separate bowl.

  2. Add the potatoes, onions, and garlic to the beaten eggs and allow to sit for about 15 minutes.

  3. Put the reserved tablespoons of oil in the original 10‑inch frying pan and place over low‑medium heat.

  4. Add the egg/potato/onion/garlic mixture to the frying pan; fry, lifting up the edges of the tortilla Española to allow uncooked egg to run underneath and cook.

  5. Serve after cooked, topped with salsa, sour cream, shredded cheese, chives, etc. as desired.

Recipe from the Wikibooks Cookbook.

Steps grouped into stages for easier reading; the method is the source's own.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.

  1. Garlic + oniontop 1% of all pairs
    Aroma overlapstrong
    Mentioned together29,058 recipes

    Shared aroma: furaneol (caramel, strawberry).

  2. Garlic + olivetop 2% of all pairs
    Aroma overlapmoderate
    Mentioned together25,665 recipes

    Shared aroma: linalool (floral, citrus).

  3. Potato + oniontop 3% of all pairs
    Aroma overlapmoderate
    Mentioned together9,023 recipes

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

  4. Garlic + potatotop 4% of all pairs
    Aroma overlapmoderate
    Mentioned together4,517 recipes

    Shared aroma: furaneol (caramel, strawberry).

  5. Olive + potatotop 7% of all pairs
    Aroma overlapmoderate
    Mentioned together6,458 recipes

    Shared aroma: 2-undecenal (sweet).

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

What each ingredient does

Eggs
Set the mixture into a firm, sliceable omelette as they cook.
Potatoes
Provide the bulk and tender body of the omelette once fried in oil.
Onion
Adds sweetness and savoury depth as it softens in the hot oil.
Garlic
Adds aroma and savoury flavour when browned in the oil.
Vegetable or olive oil
Fries the potatoes and onion and carries flavour into the dish.

The step that matters

Lifting the edges while the omelette cooks. Lifting the edges lets uncooked egg run underneath to set, so the centre cooks evenly instead of staying runny or sticking to the pan.

Flavor stand-ins for the potato

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

  1. Chivebetter flavor fit
  2. Spinachabout as good a flavor fit
  3. Broccoliabout as good a flavor fit
  4. Potatothe original

Fit is the average pairing score against garlic, olive, onion, egg. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).

“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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