An ice crushing system includes multiple sets of interleaved blades with some of the blades being provided with a series of raised protrusions on one or more faces. With this arrangement, the spacing between the interleaved blades is reduced and a finer crushed ice consistency is established. In accordance with aspects of the invention, the raised protrusions are staggered along each side of a set of fixed blades, with the raised protrusions on one side of a fixed blade overlapping the raised protrusions on the opposing side.