A McDonald's Filet-o-Fish stacked atop its blue box - Robson90/Shutterstock The Filet-O-Fish was the first addition to the original McDonald's menu and possibly the first fast food fish sandwich ever.
Filet-O-Fish may not be the flashiest sandwich on McDonald's menu, but it's perhaps one of the easiest options to customize ...
Innovative fans have discovered that just one change takes the Filet-O-Fish from good to downright delicious.