1. Method 1: First clean up the debris that can be observed with the naked eye from the ground vegetables, then soak them in warm water for about 2 hours. After soaking in warm water, the ground vegetables will soak and swell. Pour away the water in which the Dipi vegetables were soaked, replace them with clean tap water, add 2 tablespoons of edible salt, and soak the Dipi vegetables in salt water for another half an hour. Dip vegetables soaked in salt water, knead them several times with your hands, and then rinse them with water 3 or 4 times and they will be very clean.

2. Method 2: Similarly, after cleaning the impurities of the Dipi vegetables, soak the Dipi vegetables in warm water for 2 hours. After soaking the Dipi vegetables, rinse them repeatedly with rice water, knead them with your hands, and then rinse them with clean water 2 or 3 times. The Dipi vegetables will become very clean.