I used tilapia. We did like the tartar sauce but I think CL has some better fish sandwich recipes, like Cornmeal-Dusted Catfish Sandwiches with Tangy Slaw (July 2015). I'll stick with those.
Tarter sauce is awesome! Fish batter is good but maybe a tiny bit bland. Easy recipe. Husband loved it.
Tasty and easy to make weekday recipe. I also like that it's easily modified for your own tastes, as evidenced by the number of reviewers who did exactly that. I made it with catfish, doubled the amount of cayenne, used garlic pepper instead of salt, left out the sweet relish, and served the fillets with rice and a salad instead of putting them in buns. I'll definitely make it again.
Crisp coating was a nice substitute for fried fish. I used tilapia instead, doubled the cayenne and the amount of salt (I used seasoned salt). I also liked the tartar sauce, used olives instead of capers and left out the relish. I also used Liquid Amino Acids instead of the Worcestershire. I had to increase the cooking time by 10 minutes to get the coating right and sprayed the top of the fish with cooking spray to get more browning. My kids even liked it! I'll make this again.
I always have a hard time with this rating system. These sandwiches aren't "worthy of a special occasion" but are good, and are worth 4 stars out of 5. :) We used cod instead of grouper, and a crema from a fish taco recipe that we also have on the sandwiches. Very good. Has a little kick to it, but just enough.
Good quality fresh fish is best prepared simply, IMHO. This method lets the flavor of the grouper stand out and not the coating. I usually blend hushpuppy mix (the kind with onion) with yellow corn meal which provides an additional layer of taste but still results in a crispy crust that doesn't smother the fish.
I enjoyed it very much. Quick and easy. Great for a busy schedule. I used Miracel whip for the sauce and it was great!