Depending on the conditions of the raw material, stewed rose petals are processed immediately. Cold flowers or not enough warmed are conditioned in polyethen bags for preservation or increase of the essential oil.

The flowers are placed in distillation boiler and mixed with water in fixed ratio. The distillation is water-steam combination which allows a better mix of the raw material, uniform speed of the distillation and recovering of the water evaporated during the process. The duration of one run is about 3 hours and it is performed under strict and monitored parameters: temperature and speed of distillation.

Two main stages take place during processing representing a continous process: primary distillation of the flower and cohobation. During the first stage a primary rose distillate is obtained containing 10-20% of rose oil. The rest 80-90% of the oil is recoverd during cohobation and it is the main technological process in rose oil production.

Separation of the rose oil from the water is done physically as both substances are insoluble - the oil being lighter than water is floating on the surface and it is collected trough a specialized tank type of vessel.

The production yield of rose oil is remarkable - up to 3500 kg of rose flowers are required just for the production of 1 kg rose oil! In consequence the distillation of roses often continues 24 hours untill all raw material is processed

Bulgaria has traditions in rose oil production for more than 300 years. Nowadays the oil distillation principles remain unchanged, but trough application of an engineering approach to the production processes we have done numerous technological and equipment improvements aiming process enhancement for a better quality of rose oil distillation.