Effect of pressure (normal or elevated), a heating method (by using a coat or coat and coil) as well as smell contained in a process condensate on production process carried out in the evaporator was studied. The products were organoleptically acceptable regardless of conditions of the technol. process. An increase of pressure resulted in reduction in the vitamin C content and an increase in the hardness and consistency of the product. Use of the condensate resulted in an improvement of the jam smell.