In China, goji berries are eaten raw or dried, juiced, in wines, or cooked into herbal teas. The oblong reddish-orange fruits possess a light sweetness, and when dried they are the size of raisins. According to traditional use, goji berries are useful for enhancing the health of the liver, kidneys and lungs. They are consumed to improved immune function, boost blood circulation, and improve sperm production.