Popular Fast-Food Chain Giving Out Freebie Thursday

ILLINOIS ? "America's first fast-food hamburger restaurant" is giving away free burgers this week only. White Castle locations across Illinois will give away free sliders in honor of National Slider Day this Thursday.

According to White Castle, it introduced National Slider Day in 2015 to honor the Original Slider, which was named "the most influential burger of all time" by Time magazine in 2014.

"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 to get a free slider, but customers get can get the steam-grilled slider by using the code SLIDERDAY on the White Castle app or using the digital coupon available on the White Castle website and social media channels.

In Illinois, White Castle has locations including Aurora, Joliet, Lombard, Romeoville, Homer Glen, Bolingbrook, Chicago, Orland Park, Downers Grove, Hoffman Estates, Algonquin and New Lenox.