PRODUCTION METHOD OF FLAVOURED DARK BEER Russian patent published in 2009 - IPC C12C12/00 

FIELD: food industry.

SUBSTANCE: method comprises mixing lemon-balm and hop, extracting obtained mixture by liquid nitrogen with corresponding miscella separation, cutting, drying in microwave field at preset process parametres and frying yacon, mixing yacon and malt, impregnating obtained mixture by separated miscella with simultaneous pressure boost, depressurisation till atmosphere pressure with simultaneous freezing of mixture and its cryomilling in medium of evolved nitrogen, filling mixture with drinking water and saccharifying it to obtain the wort; adding beer yeast to wort, performing main fermentation, alcoholising and postfermentation and filtering.

EFFECT: process technology duration is reduced and foam stability of the target product is increased.