1. Duck blood can be kept in the refrigerator when the temperature is high in summer. Generally, it can be kept in the refrigerator for about a day. Fresh duck blood should not be kept fresh for a long time, and it is best to eat it immediately after purchase.

2. Frozen storage. If you don't eat boxed duck blood for a long time, you can consider freezing it in the refrigerator, but it is not recommended to keep it for too long. Quick freezing will make duck blood bubble and affect the flavor of duck blood. In addition, even if some components in blood are stored in the refrigerator, they are particularly vulnerable to bacterial corrosion and pollution.

3, salt water immersion preservation. If it is fresh duck blood, it can be preserved by soaking it in light salt water, and it needs to be changed once or twice a day, and it usually remains unchanged for about three days.