1. Wash the fresh lotus root, peel it and cut it into small pieces, use a juicer to beat the lotus root pieces into lotus root paste, add water and stir, then pour it into gauze and filter.

2. Stir the lotus root residue in clean water, pour it into gauze, and filter again to get a suspension rich in starch.

3. Put the suspension rich in starch in the shade for two hours, and pour off the clear water on it, leaving the starch at the bottom.

4. Put the starch left at the bottom into a container and expose it to the sun. After drying, it becomes lotus root starch.