If you want to make a copycat sandwich for a Filet-O-Fish from McDonald's, you'll need the right frozen fish fillet. We taste-tested several popular products.

Sure, they make great, dippable snacks or quick late-night food, but they can also be folded into tacos, stacked into sandwiches ... winner that offers the best frozen fish your money can buy.

To find out which supermarket chain carries the best frozen burgers, I compared options from Wegmans, Costco, and Whole Foods. I sampled each patty multiple times, both with and without cheese.

Assorted frozen fish fillet packages and sandwich ingredients - Sam Skopp/Mashed ...