One pound of fresh pig blood needs to be mixed with one-third of water.

If the fresh pig blood is from slaughtered pigs, it should be mixed with water, about two-thirds of water and 5 to 8 grams of salt. The pig blood blended in this way will be very fresh and tender after cooking. If it is fresh pig blood bought in the market, then it doesn't matter how much water it is mixed with, because it has already solidified.

The ratio of pig blood to water is not restricted, but it will have an impact if it exceeds 5 pounds. The specific method is to add 0.2-0.5% animal plasma anticoagulant into the stirring collection bucket, introduce the plasma into the bucket through the diversion trough, and turn on the machine to stir until the collection is completed. The plasma is then refrigerated at a low temperature of 4 degrees for 3-15 hours, and the plasma is filtered before processing the blood tofu.

How to buy pig blood

1. Smell

Pig blood is pig blood. High-quality pig blood will smell faintly bloody. taste. Because low-quality pig blood contains less blood, there is generally no smell of blood, while fake pig blood not only has no fishy smell, but also has a pungent smell because it has been soaked in formaldehyde, which has a pungent smell.

2. Look at the color

The color of high-quality pig blood is generally a relatively clean dark red, while fake pig blood has a different color due to the addition of chemical substances such as pigments, blood red and blood filaments. It will be very bright red. What everyone needs to pay attention to is that there is still a kind of inferior pig blood on the market. It is not bright red, but very turbid gray. It is also caused by the small blood content and the addition of a large number of chemical substances.