FIELD: food industry.
SUBSTANCE: invention relates to the process of manufacturing coffee substitutes. Instant powder for making a flavoured coffee drink is obtained by preparing the recipe components, extracting nutmeg using liquid nitrogen with corresponding miscella separation, preparing and cutting yacon tubers in a microwave field to a residual humidity of about 20% at a microwave field power that ensures heating the yacon tubers to a temperature of 80-90°C inside the pieces for at least 1 hour. The yacon tubers, barley and rye grains are roasted, charged together into a cryogenic grinder in a weight ratio of 2:2:1 and mixed up. The obtained mixture is impregnated with the separated miscella while simultaneously increasing the pressure to a value corresponding to the pressure of nitrogen saturated vapours at the impregnation temperature. Then the pressure is relieved to the atmospheric one while the mixture is simultaneously frozen and subject to cryogenic grinding in the environment of released nitrogen.
EFFECT: method enables to obtain a flavoured coffee drink with improved organoleptic properties using a waste-free technology.
