Discover how Bacalao became one of Spain’s most treasured ingredients, transforming preserved salt cod into hundreds of regional dishes that continue to define Spanish cuisine.
The first time I tasted Bacalao in northern Spain, I was surprised that such delicate, flaky fish had once been rock-hard with salt. A local chef explained that the cod had spent nearly two days soaking in fresh water before being gently cooked in olive oil, garlic, and peppers. The result was tender, flavorful, and remarkably fresh. It was difficult to believe that this simple ingredient had once traveled thousands of miles aboard fishing ships before becoming a staple in Spanish kitchens.
That meal revealed why Bacalao has held a special place in Spain for centuries. Long before refrigeration, salt cod allowed families to enjoy high-quality seafood throughout the year, regardless of where they lived.
What Is Bacalao?
Bacalao is salt-cured cod that has been preserved through heavy salting and drying. Before cooking, the fish is soaked in fresh water for one to three days to remove excess salt and restore its natural texture.
Although cod is caught mainly in the cold waters of the North Atlantic, Bacalao has become one of the most important ingredients in Spanish cooking. Its firm flesh, mild flavor, and remarkable versatility make it suitable for stews, fritters, casseroles, soups, and tapas.
Today, Bacalao remains an essential ingredient in regional cuisines throughout Spain.
The History of Bacalao
The history of Bacalao dates back to the Middle Ages.
As European fishermen ventured into the rich cod fisheries of the North Atlantic, they discovered that salting and drying fish allowed it to survive long sea voyages and extended storage. Spanish and Portuguese merchants soon developed thriving trade networks that brought salt cod inland, making seafood available even in regions far from the coast.
Religious traditions also contributed to its popularity. During periods of fasting, when meat consumption was restricted, Bacalao became an important source of protein.
Over time, nearly every Spanish region developed its own signature salt cod recipes.
Why Salt Cod Became So Important
Several factors explain the lasting popularity of Bacalao.
Its advantages include:
- Long shelf life
- Easy transportation
- Rich protein content
- Versatile cooking methods
- Excellent flavor
- Reliable year-round availability
These qualities made salt cod an essential ingredient long before modern refrigeration.
How Bacalao Is Made
Traditional Bacalao production follows a carefully controlled process.
It includes:
- Catching fresh cod
- Cleaning the fish
- Covering it with sea salt
- Draining excess moisture
- Drying under controlled conditions
- Packaging for storage
The combination of salting and drying preserves the fish naturally while concentrating its flavor.
Before cooking, Bacalao must be rehydrated by soaking it in cold water, changing the water several times.
How to Prepare Bacalao
Preparing Bacalao begins with proper desalting.
The basic process involves:
- Rinsing the fish
- Soaking in cold water
- Refrigerating while soaking
- Changing the water regularly
- Testing the salt level
- Drying before cooking
The soaking time depends on the thickness of the fillets, but most require between 24 and 48 hours.
Proper preparation produces tender fish with balanced seasoning.
Regional Bacalao Dishes
Every region of Spain has embraced Bacalao in its own way.
Popular dishes include:
Bacalao al Pil Pil
A Basque specialty featuring cod gently emulsified with olive oil, garlic, and chili.
Bacalao a la Vizcaína
Prepared with a rich sauce made from red peppers, onions, and tomatoes.
Bacalao con Tomate
A simple combination of cod cooked in tomato sauce.
Buñuelos de Bacalao
Light salt cod fritters enjoyed throughout Spain.
Potaje de Vigilia
A traditional Lenten stew made with Bacalao, chickpeas, and spinach.
These recipes demonstrate the remarkable versatility of salt cod.
Bacalao in Spanish Cuisine
Few ingredients appear in as many regional dishes as Bacalao.
It is commonly served:
- In stews
- As tapas
- In fritters
- With tomatoes
- In rice dishes
- With vegetables
Its mild flavor allows it to pair beautifully with garlic, olive oil, peppers, potatoes, and herbs.
Nutritional Benefits of Bacalao
Besides its culinary versatility, Bacalao offers excellent nutritional value.
It provides:
- High-quality protein
- Omega-3 fatty acids
- Vitamin B12
- Selenium
- Phosphorus
- Iodine
After desalting, it becomes a lean and nutritious ingredient suitable for a balanced Mediterranean diet.
Pairing Bacalao with Food and Wine
Traditional accompaniments enhance the delicate flavor of Bacalao.
Excellent pairings include:
- Roasted peppers
- Boiled potatoes
- Chickpeas
- Spinach
- Crusty bread
- Extra virgin olive oil
Recommended wines include:
- Albariño
- Verdejo
- Godello
- Txakoli
- Cava
These wines complement the fish without overwhelming its subtle flavor.
Bacalao in Modern Gastronomy
Today, Bacalao remains one of Spain’s most respected traditional ingredients.
Modern chefs continue reinventing classic recipes while preserving the careful preparation methods that define salt cod. From Michelin-starred restaurants to neighborhood taverns, it continues to appear on menus throughout the country.
International interest in Spanish cuisine has also introduced salt cod to diners around the world.
Whenever I enjoy Bacalao, I am reminded that some of history’s most practical preservation methods have produced extraordinary culinary traditions. What began as a necessity for long-distance trade has become one of Spain’s greatest gastronomic achievements.
Why Bacalao Remains a Spanish Culinary Icon
Few ingredients have shaped Spanish cooking as profoundly as this cuisine.
Its remarkable shelf life, versatility, and delicate flavor allowed generations of cooks to create comforting meals from a simple preserved fish. From Basque Country to Andalusia, every region has contributed recipes that celebrate this extraordinary ingredient.
Whether served in a rich Pil Pil sauce, folded into crispy fritters, or simmered in a hearty stew, it continues to represent the creativity, resourcefulness, and culinary heritage of Spain.
Traditional Bacalao al Pil Pil Recipe
Ingredients
- 4 Bacalao fillets, desalted
- 150 ml extra virgin olive oil
- 4 garlic cloves, thinly sliced
- 2 dried red chilies
- Salt (if needed)
Instructions
- Heat the olive oil gently in a wide pan.
- Fry the garlic and chilies until lightly golden, then remove them.
- Place the Bacalao skin-side down in the warm oil.
- Cook gently over low heat, turning occasionally.
- Remove the fish briefly.
- Swirl the pan continuously to emulsify the natural gelatin with the oil.
- Return the fish to the pan.
- Top with the garlic and chilies before serving.
Serving Suggestions
Serve it with boiled potatoes, grilled asparagus, or crusty country bread. Pair it with a chilled glass of Txakoli, Albariño, or Godello for an authentic northern Spanish dining experience.
Preparation Time: 20 minutes (after desalting)
Cooking Time: 25 minutes
Servings: 4
