1, buy the right amount of soybeans, vinegar (I use rice vinegar)

2, wash the clean soybeans, and pour the vinegar out of half a bottle.

3, put the clean soybeans into the bottle of vinegar, put the lid on, after a month, you can eat.

4, the amount of how much they look at their own, soybeans soaked for a period of time will rise, be sure to let the vinegar soaked through the soybeans