This Shanghai favorite is soup that contains solidified blood as its main ingredient. In fact, the blood rather resembles dark red tofu and has very little taste. The broth used is a very light or slightly salty clear chicken broth with some spring onion added for a nice flavor. All in all, this traditional Shanghai snack is quite tasty.
Don't be scared. If you are not totally disgusted by the idea to begin with, you may like it. It is available in places like the Old City God's Temple and Yuyuan area.
This soup is said to be very healthy and good for you. The Chinese claim eating certain parts of animals strengthens the corresponding part on one's own body.