The duck blood should be soft and the vermicelli should be soft and elastic.

The taste of soup varies from place to place.

Drink duck blood vermicelli soup in eastern cities such as Nanjing, Suzhou, Wuxi, and Shanghai. In Shanghai, for example, most of them are old duck soup, which is salty and light, delicious, and the duck soup is rich in flavor.

In Sichuan, Hubei, Hunan, Anhui or central cities, duck blood vermicelli soup is generally spicy, and some have the taste of spices in traditional Chinese medicine, which is spicy, not necessarily old duck soup. But the aroma of Chinese medicine is also very strong, and the soup is mainly composed of umami and spiciness mixed with seasonings.