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

FIELD: chemistry.

SUBSTANCE: invention relates to brewing technology. The method involves mixing bay leaf and hop, extraction of the obtained mixture with liquid nitrogen and separation of the corresponding miscella, cutting, drying in a microwave field at given process parametres and roasting girasol/sunflower, mixing girasol/sunflower and malt, saturating the obtained mixture with the separated miscella while simultaneously increasing pressure, reducing pressure to atmospheric level with simultaneous freezing of the mixture, cryogenic grinding in the medium of the released nitrogen, adding sugar and water and saccharification to obtain wort, adding brewing yeast and carrying out primary fermentation, after-fermentation and filtration.

EFFECT: method shortens duration of the process and increases foam stability of the end product.