Spain By Food Enthusiasts · 6 min read

National Dish Spain: Tortilla de Bacalao (Recipe)

Golden Spanish tortilla de bacalao with salt cod and potatoes, sliced into wedges

In this article

Say hello to Tortilla de Bacalao, a wonderfully savoury slice of Spain’s coastal kitchen. This hearty omelette folds tender potatoes and flakes of salt cod into softly set eggs, delivering the kind of rustic comfort that has graced tapas counters for generations. Equally at home as a sharing plate or a satisfying main, it carries the unmistakable warmth of the Iberian table. Bring a taste of the Spanish coast straight to your own kitchen.

About Tortilla de Bacalao

Tortilla de Bacalao is a classic Spanish dish that captures the unmistakable character of Iberian cooking. It pairs tender potatoes with salt cod — a dried, salted fish — all bound together in a generous, savoury omelette. This tortilla is not only a beloved fixture of Spain’s tapas culture but also makes a splendid main course in its own right. With its layered flavours and homely appeal, it is a perfect example of the culinary creativity that defines Spanish cuisine.

Ingredients (serves 1–2)

200 g salt cod (preferably salted)
3 large potatoes
4 eggs
1 onion
Olive oil, for frying
Salt and pepper, to taste

Shopping for the ingredients

Sourcing the ingredients for Tortilla de Bacalao is best done at a good grocer or a specialist Spanish deli. Look out for high-quality salt cod to get the very best from your dish. For the potatoes, floury varieties are ideal, as they break down beautifully during cooking and lend a lovely creamy texture. Finally, a good olive oil brings an authentic Spanish note to the whole preparation.

Preparing the dish

Before you start cooking your Tortilla de Bacalao, the salt cod needs to be soaked at least 24 hours in advance to draw out the salt. Rinse it thoroughly afterwards and break it into small pieces. The potatoes should be peeled and cut into thin slices, while the onion is finely chopped. Good preparation keeps the cooking process running smoothly and helps you achieve a flawless result.

Step-by-step instructions

Heat the olive oil in a frying pan and add the potato slices. Fry until soft and golden.
Add the chopped onion and cook everything together until the onion turns translucent.
In a bowl, whisk the eggs and stir in the flaked salt cod.
Tip the potatoes and onion from the pan into the egg mixture and combine well.
Return the mixture to the pan and cook the omelette over low heat until the underside is golden.
Carefully flip the tortilla to cook the other side until it too takes on a golden colour.
Turn the tortilla out onto a plate and let it rest for a few minutes before slicing and serving.

Gluten-free / lactose-free version

Tortilla de Bacalao is naturally both gluten-free and lactose-free, which makes it a brilliant option for anyone with particular dietary needs. Because it relies entirely on fresh ingredients, there is no need to introduce anything containing gluten or lactose. Do check that everything you use — the salt cod and potatoes in particular — is free from hidden sources of either, though typical additives in olive oil are no cause for concern.

Tips for vegans and vegetarians

For vegan and vegetarian versions of Tortilla de Bacalao, the eggs can be swapped for plant-based alternatives. A blend of chickpea flour and water makes an excellent egg substitute and provides the binding you need. The salt cod, meanwhile, can be replaced with marinated tofu cubes, which offer a similar umami depth. These adaptations let plant-based eaters enjoy the hearty pleasure of a traditional tortilla too.

More tips and tricks

A few simple tricks can make your Tortilla de Bacalao even more delicious. Blanching the potatoes before frying, for example, shortens the cooking time and gives a more even texture. Experiment with different spices, such as paprika or cumin, to add extra layers of flavour. Serve the tortilla warm with a squeeze of fresh lemon juice to lift and intensify the aromas.

Adapting the recipe to your taste

Tortilla de Bacalao is easy to tailor to your own preferences. You might add extra vegetables such as peppers or spinach to boost the proportion of veg, much as you would in a generous plate of Espinacas con Garbanzos. Regional herbs like parsley or coriander can lend the dish an individual touch too. Don’t hesitate to play with different techniques — baking the tortilla in the oven, for instance, gives a more even cook.

Ingredient substitutions

Several ingredients in Tortilla de Bacalao can be swapped to suit what you have. If salt cod is unavailable, fresh cod or salmon work well in its place. For a milder flavour, fresh fish or even surimi make good alternatives — the same flaky fish that shines in dishes like Ensalada de Bacalao or a delicate Pastel de Cabracho. With the potatoes, you might experiment with sweet potatoes for a sweeter note and added nutrients.

Drink pairing ideas

A glass of Spanish white wine, such as Albariño or Verdejo, pairs beautifully with Tortilla de Bacalao and complements the flavours of the dish. A refreshing sangria or a homemade lemonade also makes a perfect companion. If you prefer something simpler, a light beer rounds out the savoury tortilla nicely. Enjoy the dish with a well-chosen drink to complete the experience.

Serving and presentation ideas

Presentation can make all the difference in setting an inviting table for Tortilla de Bacalao. Serve the tortilla on a handsome wooden board for a rustic look. Garnished with fresh herbs or lemon wedges, it looks especially appetising. An attractive presentation makes not just the dish but the whole meal feel a little more special — perfect alongside other coastal favourites such as Sardinas Asadas.

A bit of history

Tortilla de Bacalao has its roots in traditional Spanish cooking, which has always leaned on seasonal, locally available ingredients. Historically, salt cod was a method of preservation, keeping fish edible for long stretches before refrigeration existed. Over time the tortilla grew into a beloved dish in Spanish homes, especially in coastal regions where fish was plentiful. Today it ranks among Spain’s most popular tapas and appears on menus in restaurants up and down the country.

More recipe ideas

Summary: Tortilla de Bacalao

Tortilla de Bacalao is a versatile, flavourful dish that strikes a perfect balance between savoury fish and tender potatoes. Whether served as tapas or as a main course, it wins people over with its aromas and its straightforward preparation. With a few variations and adjustments, this dish can suit just about any palate, offering a delicious way to enjoy Spanish cooking at home. Let Tortilla de Bacalao inspire you and bring a little piece of Spain to your kitchen.