Three washes and three presses of Wujiang mustard tuber refer to the processing technology of mustard tuber. The first time it is washed on the conveyor belt, the second time it is washed in the elutriation machine, and the third time it is desalted and elutriation after shredding. The so-called three presses are pressed three times, which is a process that ordinary raw materials have to go through, and some varieties may have to go through four or five times. Of course, when eating, you can decide whether to wash it again according to your personal preference. If you eat it directly, there is no health hazard!