Black Currant Absolute is produced by extraction of the buds with benzene or petroleum ether. The extract is a concrète which is subsequently re-extracted with alcohol to yield an absolute. The absolute is a viscous liquid of dark green color and powerful spicy-woody odor. There is a slightly phenolic undertone and the tenacity is not outstanding. Quantitatively, the main constituents are monoterpenes and sesquiterpenes. These are not responsible for the characteristic odor of the absolute.
Arctander, Steffen . Perfume and Flavor Materials of Natural Origin (p. 120).