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 2-3 tablespoons of the mixture, then shape it into an oval croquette using your hands – just like an egg. Repeat the process until the salmon mixture is used up.
Lightly dip the croquettes into the extra egg mixture until completely coated. Then roll them in breadcrumbs. Set aside.
Heat a small non-stick or cast iron frying pan on medium-high heat, then add about ½ cup of oil. Let the oil heat until it reaches about 350℉/177℃.
Gently place the croquettes in oil using a slotted spoon, then fry for about two minutes per side or until golden brown. You may have to do this in batches to prevent the croquettes from getting soggy.
Transfer to a plate lined with paper towels and serve hot with remoulade sauce.