Combine first 4 ingredients in a large shallow dish. Set aside.
Sprinkle fillets with salt and pepper. Dredge grouper in flour mixture; dip in buttermilk, and dredge in flour mixture again.
Pour oil to a depth of 3 inches in a Dutch oven; heat to 350°. Fry fish 5 to 6 minutes or until golden; drain on paper towels. Serve on rolls with Creamy Coleslaw.
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