Deodorization of cocoa liquor is most widely applied where the end use is in milk chocolate confectionery. The process is,hoe-ever, sometimes applied during beverage especially where high quality drinks based on chocolate crumb are involved The simplest system involves heating a thin film of liquor in a steam-heated trough or drum. In some cases ca. 2% water is added to the liquor before heating Temperatures of 80-110 C are used undesirable volatile compounds being removed with the steam.
Treatment of thin films of liquor by scrubbing with hot, humidified air is the basis for a number of systems, scrubbing usually takes place as the liquor flows down a heated column against an upward flow of hot air. Agitators are fitted to ensure turbulent flo. Single