In 2013, McDonald's began sourcing its Filet-O-Fish from a sustainable Alaskan pollock fishery, and according to McDonald's website, the current Filet-O-Fish still holds to the same standards. In the U.K., there are two types of fish in the sandwich — white Hoki and Pollock —and in China, the Filet-O-Fish is still made with cod per the original recipe, albeit with two patties instead of one.