1. Store in the freezer for no more than one week. After boiling the cow's blood, it cannot fully kill the original bacteria and can only kill a small part. If stored in the refrigerator for too long, serious deterioration will occur.

2. Ox blood has the effect of tonic and regulating blood. It is mainly used to treat diseases such as bloody dysentery, blood in the stool, weakness of the spleen and stomach, blood deficiency and amenorrhea. To take it, you can add 1/3 or 1/4 water to fresh beef blood, an appropriate amount of refined salt, stir evenly, cook or steam it, cut into pieces and mix with vinegar for consumption. You can also use beef blood cubes processed according to the above method, stir-fry or add Make beef blood cubes with seasonings, stir-fry or add seasonings to make beef blood soup.