01 -
Preheat oil to 350°F in a deep fryer or medium saucepan.
02 -
Combine flour, cornstarch, baking powder, salt, and cayenne pepper in a bowl. Whisk in water until slightly foamy.
03 -
Pat fish dry with paper towels and dip in batter to fully coat each fillet.
04 -
Deep-fry for 3-4 minutes until golden brown. Cook pieces separately if needed.
05 -
Let fish drain on a wire rack before serving.