How McDonald's Filet-O-Fish became one of the most iconic menu items in fast food

The first McDonald's Filet-O-Fish was created by a Cincinnati franchisee to serve Catholic customers during Lent.

Robson90/Shutterstock

• The Filet-O-Fish was created in 1962 to better serve Catholic McDonald's customers during Lent.
• It beat out McDonald's founder Ray Kroc's own invention to land a permanent spot on the menu.
• It's now one of the most iconic McDonald's menu items, with 300 million sold worldwide each year.

A glistening bun, a breaded fish filet...