Preparation method of white grape fruit grain flavored sparkling wine

The invention relates to the technical field of alcoholic beverages, and particularly discloses a preparation method of white grape fruit grain flavored sparkling wine. The preparation method comprises the following steps: preparing white grape juice; preparing wort; mixing the white grape juice and the wort according to a mass ratio of 1:(3-5), adding yeast, fermenting at 12-15 DEG C to obtain fermentation liquor, when the sugar degree of the fermentation liquor is reduced to 4-5 DEG Bx, increasing the pressure to 0.1-0.3 MPa, fermenting at 12-15 DEG C for 3-6 days, then cooling to 4-6 DEG C, fermenting for 1-2 days, cooling to 0-1 DEG C, and fermenting for 5-10 days to obtain the fresh sparkling wine, and carrying out cold storage on the fresh sparkling wine, and filtering the wine to obtain the white grape fruit grain flavored sparkling wine. Through adoption of a specific brewing process, the fruit and grain flavor sparkling wine which contains terpilenol, citronellol, diethyl succinate, (E)-nerolidol, D-