The invention discloses a
fermentation preparation method of a modified liquid-state local-
flavor edible vinegar. According to the
fermentation method, liquid-state local-
flavor edible vinegar is modified via increasing the content of non-volatile acid in liquid method vinegar. The
fermentation preparation method comprises following steps: a local-
flavor fermented mash needed by liquid-state fermentation vinegar production is prepared, and the modified liquid-state local-flavor edible vinegar is prepared via fermentation. The step of local-flavor fermented mash preparation comprises following steps: 1, wheat with
bran is selected and is smashed into
whole wheat flour; 2, the
whole wheat flour is mixed with water so as to obtain a
slurry, thermo stable alpha-
amylase is added, an obtained mixture is heated to 85 to 95 DEG C, the temperature is maintained for 1 to 2h, and then the mixture is boiled and cooled to 35 to 40 DEG C so as to obtain a liquid mash, wherein the
mass amount of the
whole wheat four accounts for 18 to 25%; 3, flavor-increasing saccharifying distiller's
yeast is added into the liquid mash, an obtained mixed material is heated to 35 to 40 DEG C, the temperature is maintained for 1 to 2h, and then the mixed material is cooled to 30 DEG C so as to obtain a saccharifying mash; and 4, the saccharifying mash is inoculated with
lactobacillus, and 0.35g / 100g saccharifying mash activated
yeast, the temperature is controlled to be 30 to 32 DEG C, and fermentation is carried out for 4 days or longer so as to obtain the local-flavor fermented mash needed by liquid-state vinegar production.