White Castle

== English == === Proper noun === White Castle The first fast-food hamburger chain and one of the oldest American fast-food restaurant chains, known for its Slyder, a small square burger. 2006 April 9, Ryan Nerz (interviewee), Steve Paulson (interviewer), “Techno Cuisine”, To the Best of Our Knowledge, Wisconsin Public Radio It was a qualifier for Krystal Burgers. Krystal burgers are a little bit like White Castles, the prototypical “Slyder” as they’re known.