I use Grey Goose Lemon, and equal part sweet and sour mix, and just blend it. We also have one of those Margaritaville blender machines, so it automatically knows how much ice to shave and how long to blend it to get that thick slush consistency. But you can do the same thing in a regular blender, it might not be as smooth. Some of our friends like it a little sweeter, so we add a little bit of powdered sugar to the mix and it makes it a little bit sweet.