The monograph describes the features of the licorice root evaporation process, and also, on the basis of the analysis of thermophysical characteristics, the conditions without a foamy regime for concentrating the licorice root extract are determined.In connection with the intensive development of the agro-industrial complex, the question of the most rational use of natural plant resources for the needs of the national economy arises. Licorice root is widely used in medicine in East Fzia. Licorice is a perennial herb with a fairly powerful system that buries deep underground.In many countries, licorice has a special place as a plant raw material. Licorice root has long been widely used in medicine, industry and agriculture, and is also an item of export as a medicinal and technical raw material.