November 2, 2012 No Comments FREE Sweet Potato or Crinkle Cut French Fries at White Castle on 11/6 Get FREE Sweet Potato or Crinkle Cut French Fries with any purchase at White Castle on November 6, 2012. Coupon valid 11/6/12 only. FREE Sweet Potato or Crinkle Cut French Fries at White Castle on 11/6 -EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.