I use the traditional "country" method when frying fish. Dip the filets in buttermilk and then the batter which is usually zatarans fish fry (slap yo mama is good too). This weekend I used the "cajun" method where instedad of a buttermilk or egg wash, I gave the filets a coating of mustard and then battered. It was pretty good. It didn't make as big a taste difference as I thought it would but it did have an impact. What ways do you guys fry up your fish?