If the right brewing technology is adopted, the wine will not be polluted by bacteria and fungi during the brewing process, and the wine will be stored in the right way, so that the nutrients in it will be well preserved and no harmful substances will be produced.

Homemade wine may be poisoned, homemade wine and grapes may be moldy, and there are many harmful pathogenic microorganisms. Drinking this wine may cause poisoning. Because the production environment and technology are not standardized, homemade wine may be toxic. However, if the environment of homemade wine is not up to standard, or the storage method is incorrect, such as contact with external bacteria and fungi during wine fermentation, it will destroy the nutrients in wine.