The principle of washing is to disperse in cold water first, and then wash with hot water, because it is easy to disperse when washed directly with boiling water, so it is easy to form balls. It feels like making hydroxypropyl methylcellulose solution in the laboratory. The method is as follows:

1. Prepare tools (bowls, spoons of suitable size and 2 spoons of bagged or bulk lotus root starch).

2. Pour the lotus root powder into a bowl, add a small amount of cold boiled water, and stir evenly to completely melt the lotus root powder particles (mineral water and drinking water are ok, as long as it is not too hot, this step is very important, and do not directly wash it with boiled water, which will form granular lotus root powder).

3. Stir until the lotus root starch is completely dissolved, and then pour in boiling water. Pay attention to the same thing and stir well while pouring. When the boiling water is slow, stir in one direction until the lotus root starch is formed. Don't pour too much boiling water, about 2/3 in a bowl.