Preparation of freeze-dried coffee tablets

The freeze-dried coffee tablets were prepared by hot water extraction and freeze drying with coffee extract as the raw material.The optimal process was that the temperature of the extract of coffee was 90℃, extract time 12 min, the ratio of coffee to water was 1:15, the coffee concentration was 65%, the freeze-dried temperature is not more than-36℃.The coffee tablet obtained under the optimal process had better than the instant coffee better flavor, tablet character complete, appropriate hardness, good water-based rehabilitation and organoleptic quality.