Grapefruit wine and preparation method thereof

The invention discloses grapefruit wine and a preparation method thereof and belongs to the technical field of wine brewing. The preparation method of the grapefruit wine comprises the following steps: (1) cleaning a grapefruit, then removing the peel, carrying out pulping on flesh, squeezing the peel and collecting juice, mixing the flesh and the peel after pulping, so as to obtain a grapefruit serous fluid, adding SO2 and pectinase, and carrying out enzymolysis; (2) adding saccharomyces cerevisiae into the serous fluid after the enzymolysis, and starting to carry out fermentation; (3) soaking sticky rice, then steaming, pouring water for cooling, replenishing water, then adding alpha-amylase and saccharifying enzyme, carrying out enzymolysis, then inoculating non-saccharomyces, and cultivating, so that sticky rice mash is obtained; (4) after the fermentation in the step (2) is carried out for 3-4 days, adding the sticky rice mash prepared in the step (3), and continuously fermenting;(5) after the fermentati