The method consists either of preparation of a base mix, which is subjected to controlled alcohol fermentation or of preparation of a non-stabilized, non-bubbly and unfiltered alcohol-containing beverage which is subjected to carbonation, both processes followed by, stabilization and filtration, all carried out in one and the same air-tight space. The beverage remains there until consumption, when the filtration and stabilization are carried out simultaneously. The device consists of a container (1) with upper (14) and lower (15) end parts. In the center of the upper end part (14) a multifunctional plug head (3) is fixed. Its lower end is fixed to a piping (4). The lower open end of the piping (4) is placed closely to the lower end part (15). Inside the piping (4) an interchangeable filter (5) is sealed which is constructed of material with pore sizes up to 100 µm.