It doesn't matter. We have used that for a long time, and the squeezed things are clean without residue. In the morning, it is used to squeeze soybean milk for children, and it is usually used to squeeze celery juice by itself. I have used other brands of high-speed mixers before, and there will always be slag when I feel that the power is not enough. Now I finally have no such troubles. I'll just drink it after I squeeze it ~