1, adding salt to remedy, is the trace of salt and vinegar.

2, add 2-3 times the blood volume of water, Niuhong will quickly solidify, you can also cook some pepper and aniseed, add some salt, and when the temperature drops, pour the water into Niuhong and stir, Niuhong will quickly solidify into blood tofu.

3. Bull red does not coagulate. First, it is caused by too much salt. Appropriate amount of water can be added to mix water and salt evenly and promote the coagulation of pig blood as soon as possible.