Step-by-Step Instructions
Soak the Cod: Rinse the salt cod and soak it in a large bowl of cold water for 48 hours, changing the water every 6–8 hours to remove excess salt.
Prepare Ingredients: Slice the onions, chop the anchovies, and gather the remaining ingredients.
Sauté Onions and Anchovies: Heat 2–3 tablespoons of olive oil in a frying pan. Add onions and cook over low heat until golden and soft. Add the anchovies, stirring until dissolved.
Layer the Dish: In a heavy-bottomed pot or casserole, layer the cod with the onion mixture. Dust with flour to thicken the sauce. Repeat if needed.
Add Liquids: Pour in milk, water, and the remaining olive oil, ensuring the cod is submerged. Season lightly with salt and pepper.
Cook Slowly: Simmer on the stovetop or in an oven preheated to 250°F (120°C) for 4 hours. Do not boil; gentle heat ensures tender fish.
Serve: Garnish with fresh parsley and serve with creamy polenta or crusty bread.
Variations
Gluten-Free: Replace flour with gluten-free flour.
Dairy-Free: Substitute milk with unsweetened almond or oat milk.
Vegetarian Version: Swap cod for firm tofu or a plant-based fish alternative, adjusting cook time as needed.
Tips for Success
Soak the cod properly; insufficient soaking results in overly salty fish.
Use high-quality olive oil for a robust flavor.
Slow cooking is key to developing deep, rich flavors.