
Crispy fried bacalaitos are a classic Puerto Rican street food made with a fried flour-based batter loaded with salt cod, sofrito, peppers, onions and spices.
In a wide frying pan, preheat 2 inches of cooking oil to 350°F over medium-high heat.
Rinse the excess salt off the codfish and place into a stock pot. Add enough water to fully submerge the fish, and cook on a simmer for 20-30 minutes. Don't boil it, or your pot will bubble over.
Once the fish is tender, reserve 1/2 cup in a measuring cup, then drain the fish and rinse it off with cold water. Pull the cooked codfish apart into smaller chunks, and make sure to remove any bones.
In a mixing bowl, combine the flour, cornstarch, baking powder (if using) sazón, oregano, and black pepper. Stir the ingredients together with a whisk to distribute them evenly.
Add the sofrito, peppers, onions into the flour mixture.
Combine the cold water with the reserved cooking water from the bacalao. Add anywhere from 1/2 to 2/3 cup of this water to the flour mixture, whisking slowly until a batter forms. The more water you add, the thinner the fritters will be once they're fried.
Using a rubber spatula, fold the fish into the batter just until evenly combined. You want it to be the consistency of loose pancake batter. Don't overmix.
Once the oil reaches 350°F (182°C), scoop a spoonful of the batter up with your kitchen spoon. Bring the spoon to the surface of the hot oil and "lay" it into the oil, spreading the batter with the back of your spoon.
Once your bacalaito batter tastes how you like, continue frying the batter until you've used it all up.
Transfer the fried bacalaitos to the cooling rack. Serve hot.