1. Wash the lotus root, cut it into small pieces and put it in the prepared 600g clean water (be sure to cut it and put it in the water so that the lotus root will not turn black).
2. Put the lotus root block and clear water into a stirring cup to make lotus root paste.
3. Sieve the lotus root paste with a fine sieve, press the filtered lotus root paste dry with a rice spoon, and then pour the lotus root paste into a large bowl for later use. 4. After filtering, you will get a smooth lotus root paste. After standing for a period of time, the starch in the lotus root will precipitate, so you must stir it again with a spoon to make the lotus root paste even when cooking in the pot. 5. Pour the filtered lotus root paste into the pot (do not use an iron pot to avoid blackening) and put it into a small fire of rock sugar.