Chenpi is a traditional Chinese medicinal material and seasoning made by drying and aging the peel of citrus fruits (such as oranges, tangerines). The most famous one is Xinhui Chenpi from Guangdong. The longer it is aged, the richer its aroma (a unique blend of medicinal and fruity scents). It has a pungent, bitter, and warm taste, and can be used for making soup, brewing tea, or as medicine, with effects such as regulating qi and invigorating the spleen.