Cut filets on a bias so that you have pieces that are roughly the same weight. Set on a wire rack and salt both sides of fillets. Allow to cure for 20 minutes
In a bowl, stir together flour, 15g salt, black pepper, garlic powder, onion powder, paprika, cayenne, and corn meal.
In a separate bowl, stir together buttermilk and hot sauce.
To bread the fish, drop each fillet into the buttermilk mix to coat. Drain off well then drop fillet into dry mixture and coat well. Toss back and forth in your hands to remove excess batter.
Carefully lower filets away from your body into preheated 350°F/175°C oil, frying 2 at a time, for about 4-5 minutes flipping filets over halfway through. Fish is done with it's crispy and golden brown.
Transfer to wire rack or towels to drain why you fry the rest.