Fermentation type sparkling wine and preparation method thereof

The invention relates to the technical field of wine production and processing, in particular to fermentation type sparkling wine and a preparation method thereof.The preparation method comprises the following steps that 1, primary fermentation is conducted, specifically, sticky rice, water, distiller's yeast and a first yeast agent are mixed and cultured for 20-30 hours at the temperature of 22-32 DEG C, then the culture temperature is lowered to 18-20 DEG C, fermentation is ended until the alcoholic strength in a primary fermentation system is 12-18% vol, and fermentation liquid is obtained; solid is discarded after solid-liquid separation, and liquid serves as base liquor; (2) blending base liquor: blending the base liquor by using sugar liquid, so that the alcoholic strength in the base liquor is 4.0-5.0% vol, the reducing sugar is 130-150g/L, and the total acid is 1-3g/L; and 3) secondary fermentation: mixing the No.2 yeast agent with the blended base wine, carrying out secondary fermentation at 12-20 DE