(1) Cleaning the root block: put the smooth surface and unbroken kudzu root into a tank to wash it. (2) Crushing and grinding: Prepare a tank pool, use a grinder (ordinary potato grinder can be) to grind the kudzu root block, the ground pulp end of the tank pool. (3) slurry slag separation (filtration): choose a clean large pool (cement can be), can also be used to wide plastic sheet padding, surrounded by good pressure, and then 90-100 purpose wire sieve placed on the pool, in the sieve on gauze, the end of the slurry samples in the gauze, injected into the water, stir fully, so that the starch with the water poured in the large pool, and repeatedly add water until the starch and dregs of the separation of clean. (4) Precipitation: the starch will be separated from the dregs of the starch. (4) Precipitation: after 48 hours of precipitation of starch slurry, scoop dry starch above the water, remove the starch block. (5) Drying: Dry or sun-dry the starch blocks taken out, and sell them in bags or leave them for further processing.

An ordinary pulverizer will do.