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

FIELD: chemistry, brewing.

SUBSTANCE: invention relates to beer brewing technology. The method involves mixing peppermint with hop. The obtained mixture is extracted using liquid nitrogen with separation of the corresponding miscella. Chicory is cut, dried in a microwave field at given process parametres and roasted. The chicory is mixed with malt. The obtained mixture is impregnated with the separated miscella with simultaneous increase of pressure. Pressure is decreased to atmospheric pressure level with simultaneous freezing of the mixture. The mixture is subjected to cryogenic grinding in the medium of the released nitrogen. Drinking water is poured and the mixture is saccharified to obtain wort. Brewing yeast is added to the wort. Primary fermentation is carried out and then fortification, after fermentation and filtration.

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