METHOD OF BREWING FLAVOURED DARK BEER Russian patent published in 2010 - IPC C12C12/00 

FIELD: chemistry.

SUBSTANCE: invention relates to beer brewing technology. The method of brewing flavoured dark beer involves mixing chinese magnolia with hop in mass ratio of 1:10 and extraction of the obtained mixture using liquid nitrogen and separation of the corresponding miscella, cutting girasol, drying in a microwave field to residual moisture of about 20% with microwave field power which enables to heat the girasol to temperature inside the pieces of 80-90°C for not less than 1 hour and roasting, mixing the girasol with malt in mass ratio of 1:(10-25), saturating the obtained mixture with the separated miscella while simultaneously increasing pressure, reducing pressure to atmospheric pressure level with simultaneous freezing of the mixture, cryogenic grinding in the medium of the released nitrogen, pouring water and saccharification to obtain wort, adding brewing yeast, primary fermentation, after-fermentation of the young beer and filtration.

EFFECT: invention shortens duration of the process and increases foam stability.