When I'm in the South, I always order grilled grouper sandwiches. Now, I want to prepare it as an entree -- something different.
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Grouper must be blackened IMO!! I don't have a specific recipe to offer, but a Google search will turn up a bunch.
Cook it Sous Vide (or steam or grill). Top it with a chunky mango salsa. Mango - red bell pepper - red onion - cilantro - fresh lime juice. Sometimes I add a bit of coconut. Pure Florida goodness!
Grilled grouper makes fabulous fish tacos. Warm flour tortilla - grilled grouper - shredded cabbage - avocado - chipotle mayo - cilantro - fresh lime juice.
I love grouper's flavor and meaty texture. We very rarely see it sold up here in Boston. I would not deep fry it- which would mask its flavor. Personally i would flame grill it. Serve it with a lime ginger or citrus beurre blanc. Wolfgang Puck has an excellent seafood with lime ginger beurre blanc in his Wolfgang Puck Cookbook.