Members of White Castle's rewards program, Craver Nation, should check their inbox or online account for a new, limited time only BOGO coupon.
For one day only on National Hug Day (January 21), you'll be able to get a Sloppy Joe Slider or Smoky Joe Slider for free when you purchase one at full price.
One White Castle BOGO coupon can be redeemed per visit per customer.
