Bacalao Soup Recipe: Salt-Cured Cod in Citrusy Tomato Velout

This bacalao soup recipe brings the rich coastal traditions of Spain to your kitchen table, where salt-cured cod transforms into tender, flavorful bites in a velvety tomato broth.

The secret begins with soaking the bacalao for hours to remove excess salt, a critical step that ensures the perfect balance of savory and citrusy notes in every spoonful. This soup isn’t just comforting—it’s a celebration of Mediterranean flavors, where garlic, peppers, and potatoes meld together in a harmonious simmer.

The foundation of this dish lies in its simmering technique, where the bacalao slowly absorbs the aromatic broth until it’s fork-tender, never dry or rubbery.

Traditional recipes call for a long, patient cook, but this version streamlines the process without sacrificing depth—just 45 minutes of hands-off time yields a soup that’s hearty enough for a family dinner yet light enough for a weeknight meal.

The citrusy tomato velouté ties everything together, cutting through the richness of the cod with bright, tangy undertones.

What makes this bacalao soup truly special is its versatility—it’s as much a canvas for garnishes as it is a complete dish on its own.

A drizzle of high-quality olive oil, a sprinkle of fresh parsley, or even a squeeze of lemon at the table elevates the flavors to restaurant-quality.

Serve it with crusty bread to soak up every last drop of that fragrant broth, or pair it with a simple green salad for a balanced meal that feels both rustic and refined.

The result is a soup that’s rich in texture and tradition, where each ingredient plays its part—crisp edges on the potatoes, tender cod that flakes effortlessly, and a broth so flavorful it deserves a standing ovation.

Whether you’re recreating a family recipe or crafting a new tradition, this bacalao soup delivers comfort and complexity in every bowl. Let’s get cooking.

Ingredients for bacalao soup

Twelve ingredients transform salt-cured cod into a velvety tomato broth celebration of Mediterranean flavors.

The bacalao is non-negotiable—look for thick, firm pieces at Whole Foods or your local fishmonger. Spanish or Portuguese bacalao is ideal, but any salt-cured cod works. Soaking is critical: place the fish in a bowl, cover with cold water, and change the water every 30 minutes for 12+ hours. The potatoes should be waxy (like Yukon Gold) for that perfect creamy texture, but russets work too if that's what you've got. For the tomatoes, San Marzano cans from Italy deliver that signature sweetness—don't skimp here. Fresh parsley is a must for garnish, but dried will work in a pinch at one-third the amount.

No San Marzano tomatoes? High-quality crushed tomatoes in a can work, but you'll lose that depth of flavor. Substitute the red bell pepper with green bell pepper or zucchini if you prefer. For the olive oil, use something fruity and peppery—California extra-virgin brands like Corto or Colavita elevate the dish. The lemon juice can be swapped for white wine vinegar if you're avoiding citrus, but the bright acidity is what cuts through the richness. Bay leaves are traditional, but if you're out, a pinch of dried thyme adds a similar earthiness. The crusty bread should be something sturdy like a baguette or ciabatta—skip the soft sandwich bread.

This soup tastes even better the next day, so make a double batch if you can. Store in an airtight container in the fridge for up to 4 days, or freeze portions for 3 months. The broth thickens as it cools, so add a splash of water when reheating. For serving, keep the crusty bread at room temperature and toast it just before eating. The parsley and lemon should be added fresh at the table—don't mix them in during cooking or they'll lose their vibrant pop of color and freshness.

Step-by-step instructions for salt-cured cod in citrusy tomato velout

Here's the method for transforming salt-cured cod into a rich, citrus-infused tomato broth.

Rinse the 12 oz salt-cured cod (bacalao) under cold running water for 30 seconds to remove surface salt. Place it in a bowl and cover with 4 cups cold water. Let it soak for 12-24 hours, changing the water every 4 hours to fully remove excess salt. You'll know it's ready when the water tastes neutral and the cod smells fresh—no lingering saltiness.

After soaking, pat the cod dry with paper towels and cut it into 2-inch chunks. This size ensures even cooking and easy incorporation into the soup. Set aside—the cod will absorb flavors beautifully during the simmering process.

Heat the 0.5 cup extra-virgin olive oil in a large pot over medium heat. Add the 1 whole yellow onion and 1 whole red bell pepper, both diced, along with the 4 cloves minced garlic. Cook for 5-6 minutes until the vegetables soften and the garlic becomes fragrant—you should smell a sweet, slightly charred aroma.

Here's where the foundation of flavor begins. The onions and peppers should release their moisture and caramelize slightly at the edges. If they stick before softening, reduce the heat briefly and stir. This step builds the base for the velouté's rich, aromatic profile.

Add the 1 cup canned tomato sauce and 1 cup canned diced tomatoes to the pot, stirring to combine with the sautéed vegetables. Bring the mixture to a gentle simmer over medium-low heat, then add the 2 whole bay leaves and 1.5 tsp salt. Let it cook uncovered for 10 minutes to allow the tomatoes to break down and deepen in flavor.

This reduction step is crucial—it concentrates the tomato flavors and removes excess acidity. You'll notice the mixture darken slightly and thicken as it simmers. The bay leaves will infuse subtle earthy notes that complement the citrusy finish.

Add the 2 medium russet potatoes, peeled and cubed, along with the prepared cod chunks to the pot. Pour in 4 cups water (or enough to cover everything by 1 inch) and bring to a gentle boil. Once boiling, reduce heat to medium-low and let it simmer uncovered for 15-20 minutes, until the potatoes are fork-tender and the cod flakes easily with a fork.

The potatoes should be soft enough to mash slightly between your fingers, while the cod should separate into delicate flakes. If the soup reduces too quickly, add ¼ cup hot water at a time to maintain the proper consistency. This balance ensures a creamy yet light texture.

Remove the 2 whole bay leaves from the soup. Stir in the 2 tbsp lemon juice and 0.5 tsp freshly cracked black peppercorns, then adjust the seasoning with additional salt if needed. The lemon juice will brighten the flavors and cut through the richness of the olive oil and tomatoes.

Finally, stir in the 0.25 cup chopped fresh parsley just before serving. This adds a fresh herbal note that contrasts beautifully with the deep, savory flavors of the soup. Ladle into bowls and serve immediately with 1 loaf crusty bread on the side for dipping.

Perfect pairings for these flavors

Bread Pairings

Crusty bread is non-negotiable for this soup—it's the perfect vehicle for soaking up every last drop of that velvety tomato broth. I always reach for a baguette or ciabatta from my local bakery, like the ones at Panera or Whole Foods.

The crispy crust contrasts beautifully with the tender cod and creamy potatoes. For extra flair, lightly toast the bread with garlic-infused olive oil before serving. 🍞

Wine Complements

A crisp Spanish Albariño is my go-to pairing—its bright acidity and citrus notes mirror the lemon in the soup while cutting through the richness of the olive oil. If you prefer reds, a light Tempranillo from Rioja adds earthy depth without overpowering.

For something more casual, a chilled Sauvignon Blanc from New Zealand delivers zesty contrast. Avoid heavy, oaky wines that would muddle the delicate flavors. 🍷

Salad Contrasts

A simple arugula salad with a lemon vinaigrette provides the perfect fresh, peppery contrast to the hearty soup. Toss 4 cups baby arugula with 2 tbsp extra-virgin olive oil, 1 tbsp fresh lemon juice, and a pinch of flaky sea salt.

For a Mediterranean twist, add cherry tomatoes and kalamata olives—the briny notes complement the bacalao beautifully. 🥗

Citrus Garnishes

Finish each bowl with a squeeze of fresh lemon wedges—the acidity brightens the soup with every bite. I also love adding thinly sliced blood oranges for a sweeter citrus note.

For a smoky touch, sprinkle with smoked paprika or a pinch of chili flakes to add subtle heat. The contrast of textures and flavors makes this soup truly special. 🍋

Cheese Pairings

If you want to add a creamy element, serve this soup with manchego cheese on the side. Its nutty, slightly tangy flavor pairs perfectly with the citrusy broth. For a more decadent option, try aged pecorino—its sharpness cuts through the richness of the olive oil.

Just a small piece on the side lets everyone add their own touch. 🧀

Herb Finishes

Fresh herbs elevate this soup to restaurant quality. In addition to the parsley, I like adding a sprinkle of chopped cilantro for a fresh, almost Mediterranean vibe. For a more robust flavor, try thyme sprigs or rosemary—their earthy notes complement the tomato base beautifully.

Always add herbs at the table so they stay vibrant. 🌿

Frequently asked questions