No, it’s not a dance. But it just might spark some killer moves. To prepare a Rum Swizzle, it’s best to use an authentic swizzle stick. Real swizzle sticks are long stems snapped off a tree native to the Caribbean, and feature multiple prongs that stick out horizontally. When spun rapidly between your hands inside a cold cocktail, the swizzle stick will create a thick layer of frost on the outside of a glass—the sign of a perfect swizzle.