Hand-rubbing charas production represents one of the most specialized traditional cannabis processing techniques, practiced primarily in the Western Himalayas of India and Nepal. The method involves rubbing fresh, living cannabis flowers between the palms during peak resin production (typically late flowering), collecting the sticky resin that accumulates on the hands, and forming it into dark, malleable cakes or balls. Timing is critical—plants must be rubbed at the optimal stage when trichomes are fully developed but before harvest, typically during morning hours when resin production peaks.
Regional techniques vary significantly. In Parvati Valley, farmers select specific phenotypes known for high resin production and rub plants multiple times throughout flowering season. Malana village maintains distinct methods passed through generations, with specific hand movements and collection techniques considered trade secrets. The resulting charas varies in color from light brown to nearly black, with texture ranging from soft and pliable when fresh to harder and more brittle after aging. Quality depends on plant selection, timing of collection, hand pressure technique, and post-production aging. The practice requires extensive knowledge of plant maturation, resin development, and environmental conditions affecting trichome production—knowledge threatened by enforcement operations that have eliminated traditional cultivation in many historical charas-producing regions.