Can eat. You can eat hot and sour powder in the canteen in the 1980s. This brand has always used pure sweet potato powder. In addition, it adopts the industry-leading cooking process of pure powder coating, and one of the prerequisites for using this process is that it must be pure sweet potato powder. Henan Food Industry Association issued three groups: sweet potato noodle (silk) cake, sweet potato noodle (silk) cake production management standard and hot and sour powder sales operation standard.