1, the reason for long black hair is mixed with stray bacteria.

(1) The process of making is not sterilized clean.

(2) The seal is not in place.

Expanded:

Mash practice:

1, rice washed on the pot steamed.

2, steamed rice mash scattered cool.

3, into the wine, add cool water.

4, mix well, make flat with chopsticks on small holes, cover the lid seal.

5, put in a warm place, leave for 24 hours, it is done.