The invention discloses a
brewing technology for soybean sauce. The
brewing technology comprises the following steps: (1) soybean soaking: adding soybeans into water for soaking; (2) stewing: stewing the soybeans to obtain cooked soybeans; (3) mixing: mixing flour and roasted wheat
bran to obtain a flour mixture, and mixing the cooked soybeans and the flour mixture to obtain a mixture; (4)
inoculation: cooling the temperature of the mixture to be below 30 DEG C, and inoculating
aspergillus oryzae; (5) distiller's
yeast making: conveying the mixture into a leavening room for cultivation, wherein in the earlier stage of cultivation, the distiller's
yeast temperature is 28-35 DEG C, and in the later stage of cultivation, the distiller's
yeast temperature is 20-25 DEG C until the distiller's yeast is formed; and (6)
fermentation: mixing the finished distiller's yeast and salty water, performing
fermentation under normal temperature for more than 4 months. According to the
brewing technology, the contents of
reducing sugar and
amino acid nitrogen in the soybean sauce can be effectively increased, the non-enzymatic
browning effect in a soybean sauce brewing process is enhanced, and the
flavor and the color of the soybean sauce are enhanced; and furthermore, the distiller's yeast contains rich
protease, and the
utilization rate of proteins in the soybean sauce brewing process is increased.