Screened particles of uniform soybeans to remove impurities and wash, put into the water to soak, to be soaked until the soybean swelling without wrinkled skin, slightly hard heart, loaded into a bamboo basket in the sun, and then the soybean cooking 7 to 8 hours, and simmering to cover the two hours, and then poured out of the cooked material to dissipate the heat, to master the room temperature, the cooked material into the curved room natural fermentation, so that the fermentation cake. When the hair mold grows out. Also turn the fermented embryo up and down once to promote uniform fermentation. The fermentation period is generally about half a month. Length with the temperature and increase or decrease, mature fermentation embryo, decomposition into granular, and then mixed with salt, sorghum white wine, mash, etc. Mixed, mounted into the altar sealed and preserved for half a year is a finished product.