FIELD: food industry.
SUBSTANCE: method provides for preparation of recipe ingredients, extraction of fennel by liquid nitrogen with corresponding miscella separation. Yacon is cut, dried and roasted. Yacon is dried in microwave field till residual humidity about 20% at microwave field power providing warming of yacon inside the bits till temperature 80-90°C during at least an hour. Acorns are fried. Yacon and acorns are mixed in mass ratio 1:1. The obtained mixture is impregnated by separated miscella with simultaneous pressure boost. The pressure is released until it equals the atmospheric pressure along with mixture freezing. Then the mixture is cryomilled in medium of evolved nitrogen.
EFFECT: method enables to produce new flavoured coffee drink out of unconventional raw material according to nonwaste technology.
