Chicken and duck blood soup

Chicken and duck blood soup (Chinese: 鸡鸭血汤; pinyin: jī yā xiě tāng) is a Shanghainese soup-based blood dish, using the blood of chicken and duck as a principal ingredient. Created by Xu Fuquan, a hawker from Shanghai, and described to be sour and spicy in taste, the dish is viewed as a healthy food with medicinal value in Shanghai.