Details

In spring and autumn, it is necessary to excavate, remove fibrous roots and silt, and then knock off the rough skin and dry it after sun exposure

The product is conical and twisted. The surface is brownish yellow or dark yellow, with sparse verrucous fine root marks, rough upper part, twisted longitudinal wrinkles or irregular reticulation, and smooth and fine wrinkles at the lower part. Hard and crisp, easy to break, bitter taste.