The invention discloses rice
wine yeast and a preparation method thereof. The
yeast comprises the following materials in part by weight: 60 to 100 parts of sticky rice, 1 to 10 parts of licorice root, 1 to 10 parts of dried orange peel, 1 to 10 parts of
cyperus rotundus, 1 to 10 parts of
polygonum flaccidum meism, 1 to 10 parts of mulberry leaves, 1 to 10 parts of stringy stonecrop and 0 to 15 parts of water. Compared with the prior art, five Chinese medicaments such the licorice root, the dried orange peel, the
cyperus rotundus, the
polygonum flaccidum meism and the mulberry leaves are selected and added into the
yeast of the invention, which not only prompts the growth and the
metabolism of the yeast, but also inhibits the growth of pernicious
bacteria; simultaneously the
flavor of the yeast is improved by adding sweet-scented
osmanthus; and simultaneously rice
wine produced by using the yeast has a unique
flavor of the sweet-scented
osmanthus. The stringy stonecrop serving as a Chinese medicament is added into the yeast, which not only makes the yeast contain active ingredients, for protecting liver, in the stringy stonecrop, but also makes the rice
wine produced by using the yeast have the
efficacy of protecting the liver.