The proportion of pig blood mixed with water is not limited, but it will be affected if it exceeds 5 kg. The specific method is as follows: 0.2-0.5% of animal plasma anticoagulant is added into the stirring collection barrel, and the plasma is introduced into the barrel through the diversion groove, and the stirring is started until the collection is completed. Then the plasma was refrigerated at a low temperature of 4 degrees for 3- 15 hours.
When processing blood tofu, the plasma is filtered first. Weighing purified water according to 2-5 times of plasma, adding 0.5-0.8% Tianxi new blood tofu coagulant and 2-3% edible salt, stirring at high speed, mixing and dissolving, then adding plasma, and naturally coagulating into blood clots. Cut the blood clot, put it in 80℃ hot water for 30 minutes or steam it in a steamer for 30 minutes.
True and false pig blood
1, look at the color: fake pig blood is very bright because it is mixed with pigment or blood red, while real pig blood is dark red;
2, touch by hand: fake pig blood is more flexible because it is mixed with chemicals such as formaldehyde, and it will not break when cut, while real pig blood is hard and easy to break when touched by hand;
3, look at the section: after the pig blood is cut, if the section is smooth and flat, there is no air hole, which means it is fake. If the section is rough and there are irregular holes, it means it is real pig blood;
4, smell: real pig blood, with a faint smell, if you can't smell a little smell, it may be fake.
Baidu Encyclopedia-Pig Blood