We took this question to Clearwater Beach area restaurants and this is what we discovered. Many of them offer a blackened grouper option. Each has their own secret herbs and spices that none seemed ready to reveal. Many also offer a jerk version that has nothing to do with repetitive motion or a relative no one is fond of. Jerk is a Jamaican style of cooking that is a hot spice mixture that can include peppers, cinnamon, garlic, nutmeg, allspice, onion, salt and pepper.
The classic grouper grilled and then served with lettuce, tomato and house-made tartar sauce on a toasted bun. Notching it up a bit, some restaurants serve the classic with guacamole, sprouts and Sriracha mayonnaise. Others lightly bread their grouper and then fry it.
If you want to learn more about grouper, each July, the area celebrates Grouper Week.