Dip a fillet into the batter, allowing excess to drip off, then lower the fillet into the hot oil. Repeat for the remaining fillets. Fry the fish in batches until golden brown (about 4-5 minutes ...
Using a pastry brush dipped in flour, lightly dust the fish fillets all over with the extra flour. Dip a fillet into the batter, allowing excess to drip off, then lower the fillet into the hot oil.