The white thing on the duck tongue is fascia. According to relevant public information, fascia is located under the skin, also known as subcutaneous fascia. It is composed of loose connective tissue, which contains fat, superficial veins and other fats. The white fascia is available and can be used. Lai Yifen Company It was registered and established in the Shanghai Industrial and Commercial Bureau on July 2, 2002. The legal representative is Yu Ruifen. The company's business scope includes wholesale: pre-packaged food, cooked food, braised food, refrigeration and refrigeration, etc.