Here's The Truth About White Castle People Don't Know

White Castle might not bring in the money that McDonald's or Subway does, but the scrappy burger joint practically invented fast food, and they have an extremely loyal fan base to this day. Even if you count yourself among the biggest slider fans out there, there might be some things you don't know about this burger restaurant. For example, did you know that sliders have their own holiday, or that many fast food restaurants have tried but failed to cash-in on White Castle's slider success? Let's take a look at the truth about White Castle that most people don't know.