Drain the liquid from the canned salmon into a measuring cup. Flake the salmon into a large bowl, and set aside.
In a large bowl, gently mix the canned salmon, eggs, onion, garlic, ¼ cup breadcrumbs, white pepper, green onions, hot sauce, Cajun seasoning, and salt.
Grab about 2-3 tablespoons of the mixture, then shape it into a croquette using your hands into an oval shape – just like an egg. Repeat the process until the salmon mixture is all used up.
Lightly dip the croquettes into the extra egg mixture until it is completely coated. Then roll them in breadcrumbs. Set aside.
Heat a small non-stick frying pan with medium-high heat, then add about ½ cup of oil. Let the oil heat until it reaches about 350℉/177℃.
Gently place croquette in oil using a frying spoon, if needed, then fry about two minutes per side or until golden brown. You may have to do it in batches to prevent the croquettes from getting soggy.
Transfer to a plate lined with paper towels and serve warm with remoulade sauce.