Fresh duck blood can be eaten after boiling for 15 minutes.

Duck blood is cooked for a short time, and the ingredients in it are not completely cooked. There may be blood smell, which will affect the taste of duck blood.

Boiling duck blood for too long may cause the loss of nutrients and the taste is old. Duck blood is rich in nutrition, which can supplement the nutrients needed by the human body, but some can't be eaten more. Eating too much may lead to indigestion in the gastrointestinal tract, which is not conducive to normal health. Duck blood can be mixed with some ingredients to cook soup, which can also play a nourishing role to some extent.