There was a period that White Castle advertised their willingness to put bacon crumbles on any sandwich or side, but no longer is this a feature on the menu. That being said, it’s still available to order, people just don’t know about it. Wield the power of the White Castle Secret Menu and get bacon on anything you desire! This is especially tasty on any of their sliders, but you can also amp up your milkshakes by adding bacon. It’s a salty and sweet combo that will drive your tastebuds wild with delight.