Polygonum cuspidatum powder is sweet potato starch. Sweet potato starch, also known as sweet potato starch, sweet potato starch, sweet potato starch, mountain flour, etc., is a powder made of sweet potato starch, etc. Generally, sweet potato powder is granular, with coarse and fine particles, and coarse particles are usually preferred when purchased at home.

The production method and specific steps of sweet potato starch are as follows:

Step 1: Wash, remove mud and dirty edges, and then wash with clear water again.

Step 2: Crush the sweet potato with a blender until it looks a bit like slag. After grinding, it is the most critical step to separate the powder from the slag.

Step 3: Filter the sweet potato residue into a vat, try not to waste powder, and deposit all the powder into the vat. The next day, pour out the water, and the sweet potato powder will settle on the bottom, then take the powder out and put it in the sun to dry.

step 4: manually crush the semi-dried sweet potato powder, which is the sweet potato starch of the farmer.