Every March, McDonald’s sees a surge in sales of its Filet-O-Fish sandwiches.
According to a company spokesman, it’s primarily because of Lent season.
The chain sells nearly 25 percent of the sandwiches during Lent, which begins on Ash Wednesday and runs for 40 days, ending just before Easter Sunday.
The dish’s existence goes back to the 1960s when Cincinnati franchise owner Lou Groen noticed a fall in sales on Fridays when his Roman Catholic customers were observing Lent.
Groen convinced the food chain to launch a whitefish sandwich as an alternative menu item to its popular burgers.
Since its inception, the wild-caught Alaska Pollock fish sandwiches have become a McDonald’s staple.
Social media users are jokingly taking to Twitter to express their excitement for “Filet-O-Fish Season,” some celebrating the discounts many McDonald's restaurants offer on the sandwich on Fridays during Lent.
Take a look:
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