The invention provides healthy and nutritional dregs vinegar and a preparation process thereof, and relates to the technical field of food
fermentation. The preparation method comprises the following steps: S1,
steaming rice, spreading, cooling to
room temperature, mixing with distiller's
yeast, and carrying out primary
fermentation to obtain rice dregs A; s2,
steaming hyacinth beans, pulping, mixing with the rice dregs A, and carrying out secondary
fermentation to obtain rice dregs B; s3,
mashing the fresh olive fruits, adding table salt, and performing sealed
pickling to obtain olive sauce; and S4, mixing the olive sauce with the rice dregs B, carrying out third fermentation to obtain fermented
vinasse, and adding water and seasonings to prepare the
vinasse vinegar. The rice, the red
hyacinth beans and the olive sauce are adopted as raw materials and fermented to prepare the dregs vinegar, so that the loss of
nutrient substances can be reduced, and the dregs vinegar is rich in
nutrient substances such as
amino acid and VB6, has an anti-oxidation effect and is nutritional and healthy. The dregs vinegar is naturally fermented to generate the sourness of
plant acid and
vinasse fragrance, does not need additional addition of exogenous vinegar raw materials such as white vinegar and fruit vinegar, is mild, smooth, non-irritant and non-bitter, is friendly to intestines and
stomach, is easier to absorb and utilize, and is highly accepted by consumers.