What is Bolinho de Bacalhau?
Bolinho de Bacalhau is a deep-fried croquette made from shredded salt cod, mashed potato, beaten egg, parsley, and onion, shaped into oval quenelles between two spoons and fried until deeply golden. The croquette has a crispy exterior and a soft, fluffy, well-seasoned interior with visible flakes of cod and bright herbal notes. The dish is one of the most beloved Portuguese petisco (small plates) and Brazilian botequim (bar-snack) traditions, served as appetizer, tapas-style street food, and bar snack across Portugal, Brazil, Cape Verde, Angola, and the global Lusophone diaspora, where it represents the spread of Iberian salt cod cookery across colonial routes.
Popular Recipes and Regional Variations
The classic Portuguese Pastéis de Bacalhau are the original form, made with desalted shredded bacalhau, mashed potato, eggs, finely chopped onion and parsley, and shaped into oval quenelles using two spoons. Lisbon’s iconic Casa Portuguesa do Pastel de Bacalhau serves them stuffed with Serra da Estrela cheese, while traditional Lisbon and Porto tascas serve plain versions alongside chilled white wine or vinho verde.
The Brazilian Bolinho de Bacalhau evolved through Portuguese colonial influence and is typically smaller (4–5 cm), spherical rather than oval, and slightly sweeter due to the inclusion of small amounts of sugar in some recipes. Sold in botecos (Brazilian bars) across Rio de Janeiro, São Paulo, and Salvador as the quintessential beer snack, often accompanied by an ice-cold chopp draft beer. Restaurants such as the famous Adega Pérola in Copacabana have built reputations on their bolinho recipes.
Regional and modern variations include Cape Verdean Pastel de Bacalhau, slightly spicier with malagueta chili; Angolan Bolinho, often using local fish when bacalhau is unavailable; Stuffed Bolinhos with cheese, ham, or shrimp inside; Vegetarian Bolinho de Palmito using hearts of palm instead of cod; Bolinho de Sardinha with canned sardines; and the modern Portuguese-restaurant Bolinho de Polvo with octopus replacing cod for upscale presentations on contemporary tasting menus.
Preparation Technology
Begin by desalting 400 g of salt cod (bacalhau) in cold water for 24–36 hours, changing the water 3–4 times, refrigerated at 4°C. Test salinity by tasting a small piece — properly desalted cod tastes pleasantly seasoned, not aggressively salty. Drain and place in a saucepan with cold water, bring slowly to 80°C, and poach 8 minutes — never boil, as boiling toughens the fish. Remove and let cool 10 minutes.
While the cod cools, peel and cube 500 g of floury potatoes (Yukon Gold or russet). Boil in salted water for 18 minutes until very tender. Drain thoroughly and pass through a ricer or mash by hand into a fluffy texture — never use a food processor, which produces a gluey consistency. Spread the mashed potato on a baking sheet to cool and dry for 10 minutes; excess moisture in the potato is a primary cause of bolinho failure.
Remove all skin and bones from the cooled cod, then shred the flesh by hand into fine flakes 2–3 cm long. In a large bowl, combine the shredded cod, mashed potato, 2 large beaten eggs, 1 finely diced small onion, ¼ cup chopped flat-leaf parsley, ¼ teaspoon white pepper, and ¼ teaspoon ground nutmeg. Salt is rarely needed because the cod retains residual seasoning. Mix gently with a spatula until just combined; over-mixing toughens the texture.
Heat 5 cm of vegetable oil in a deep heavy pot to 175°C — verify with a thermometer or by dropping a small piece of the mixture in (it should sizzle and rise immediately). Using two soup spoons, scoop a portion of the mixture into one spoon and use the other to shape it into a smooth oval quenelle. Slide each quenelle directly into the hot oil. Fry 6–8 at a time without crowding for 4–5 minutes, turning once, until deeply golden brown on all sides. Drain on paper towels and serve immediately, ideally with lemon wedges, hot sauce, or a small bowl of garlic-cilantro mayonnaise. Pair with vinho verde or chilled lager.
Tips and Common Mistakes
Insufficient desalting is the most common error and produces overwhelmingly salty bolinhos that no amount of seasoning correction can fix. Twenty-four hours is the minimum; thicker loins or whole-bone-in cod requires 36–48 hours with frequent water changes. Always taste-test before cooking. Conversely, over-soaking past 48 hours leaches flavor and produces bland cod with mushy texture; balance is essential and tasting at multiple stages is the only reliable check.
Using a food processor or potato masher with too much force creates gluey, dense potato that ruins the desired light fluffy texture. The mashed potato component must be loose and dry — pass it through a ricer or food mill, not a processor. The starches must remain intact and undamaged; over-processed potato releases excess starch that turns the mixture into a sticky paste impossible to shape into quenelles or cook through evenly.
Frying at temperatures below 165°C makes the bolinhos absorb excessive oil and produces a greasy, soggy result. Use a thermometer to verify oil at 170–180°C, and adjust heat between batches because oil temperature drops when cold mixture is added. Frying at temperatures above 195°C burns the exterior before the cod and potato cook through, producing a dark crust around an underdone, dense interior with raw onion still detectable.
History and Cultural Significance
Bolinhos de bacalhau emerged from the broader Portuguese salt cod tradition, which dates to the 15th century when Portuguese fishermen began salt-curing cod caught off the Newfoundland Grand Banks for the long Atlantic voyages home. According to Wikipedia’s account of pastel de bacalhau, the modern croquette form developed during the 18th and 19th centuries when Portuguese cooks began combining shredded salt cod with the newly available potato — introduced from the Americas in the 16th century but only widely adopted in Portugal in the late 18th century — into the standard format we recognize today.
The dish traveled with Portuguese colonization to Brazil, Cape Verde, Angola, Mozambique, Goa, and Macau, where it adapted to local conditions and ingredients while preserving the core Portuguese identity. In Brazil, the bolinho became deeply embedded in 19th and 20th-century botequim bar culture, where it formed an essential trio with chopp beer and azeitonas (olives) as the standard appetizer ordering at neighborhood bars across the country. The Brazilian variation became distinctly its own dish through gradual evolution.
Today bolinhos de bacalhau remain defining symbols of Portuguese and Brazilian culinary identity, served at restaurants, family gatherings, weddings, religious celebrations, and street stalls throughout the Lusophone world. The dish has gained international recognition through Portuguese restaurants in cities with large diaspora communities — Newark, Toronto, Paris, London, and Tokyo — and through Brazilian boteco-style establishments in major US, European, and Asian cities. The Casa Portuguesa do Pastel de Bacalhau franchise has expanded internationally, and the dish features prominently in Portuguese tourism as one of the country’s must-try iconic foods.