White Castle to give away free slider for ‘National Slider Day’

White Castle introduced National Slider Day in May 2015 to honor the slider.

“The introduction of the Slider in 1921 helped turn White Castle into a household name and launched the fast-food industry as we know it today,” said Jamie Richardson, vice president at White Castle. “We think a burger that has had so much influence in the food industry is worthy of its own special day, and what better way to celebrate than to thank our customers with a complimentary Slider.”

No purchase is necessary.

Customers can use a digital coupon available on White Castle’s website and social media channels or enter the code SLIDERDAY on the White Castle app to redeem the offer.