white castle

White Castle is an American regional burger restaurant chain with 345 locations across 13 states, with its greatest presence in the Midwest and New York metropolitan area. Founded on September 13, 1921, in Wichita, Kansas, it has been generally credited as the world's first fast-food hamburger chain. It is known for its small, square burgers referred to as "sliders". The burgers were initially priced at five cents until 1929 and remained at 10 cents until 1949. In the 1940s, White Castle periodically ran promotional ads in local newspapers which contained coupons offering five burgers for ten cents, takeout only. In 2014, Time named the White Castle slider "The Most Influential Burger of All Time".

While White Castle is mostly known in the US and Canada where frozen White Castle sliders are available to buy in the latter, the brand got known international thanks to the 2004 stoner comedy movie Harold & Kumar Go To White Castle.