An instant pack at 286 g, supplied 30 bags per carton. Each bag holds a sweet potato noodle cake plus hot-and-sour seasonings (sauce, powder and dried vegetable sachets); add boiling water or simmer for about five minutes for a bright, spicy-sour broth. The noodle cake is cooked, shaped and low-temperature dried, so it rehydrates quickly without clouding the soup. Individual sachets suit e-commerce, convenience stores and food-delivery channels, with heat level and ingredients adjustable to order.
