5 facts about the loved and hated Filet-O-Fish Mary Bowerman, USA TODAY Network
Despite being known as a burger-giant, during Lent McDonald's has another top-seller: The Filet-O-Fish sandwich.
McDonald's sells nearly 25% of their wild-caught Alaska Pollock fish sandwiches during Lent, when many Catholics forgo meat on Fridays, according to spokeswoman Becca Hary.
The loved and hated Filet-O-Fish sandwich owes it's existence on the McDonald's menu to a Cincinnati-franchise owner who noticed in the 1960s that he was losing Catholic customers on Fridays due to the burger-only options.
Here are five interesting facts about one of the fishiest items on the menu.
- Lou Groen, who owned the first McDonald's restaurant in Cincinnati, Ohio, came up with the idea of a Filet-O-Fish sandwich in 1962. The people in his neighborhood were predominantly Catholic and during Lent Groen was making next-to-nothing on Fridays, according to McDonald's archivist Mike Bullington. He created a Filet-O-Fish recipe and took it to headquarters, where McDonald's chief Ray Kroc was also preparing his own meatless alternative, Bullington said.
In the 60s, McDonald's chief Ray Kroc prepared a meatless alternative to the McDonald's burger called the more Kroc challenged Groen to a Friday sell-off to see whether customers preferred Kroc's Hula Burger, which consisted of a piece of grilled pineapple and cheese on a bun, or the Filet-O-Fish. Bullington said Groen won by a landslide, with the Hula Burger selling six sandwiches and Filet-O-Fish selling 350.
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Welcome to the permanent menu. In 1965, the Filet-O-Fish sandwich became the only non-hamburger menu item. A sandwich only cost $0.29. Sandwiches for everyone!
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The Filet-O-Fish isn't just a popular item in the U.S. The sandwich is now served overseas in countries like Russia, Japan and India.
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There's a wasabi version of the sandwich in Asia, and in the U.S., select McDonald's carry an Old Bay Filet-O-Fish.
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Believe it or not, the Filet-O-Fish is actually fish. McDonald's uses Marine Stewardship Council certified wild-caught Alaska Pollock.


I prefer Wendy's and Arby's fish sandwiches to the one sold at McDs, but the McDs' version isn't horrible and I'd eat it if I didn't have a better option. A man's gotta do what a man's gotta do on a Friday during Lent.