Hash is a cannabis concentrate product composed of compressed or purified preparations of stalked resin glands, called trichomes, from the plant. It is defined by the 1961 UN Single Convention on Narcotic Drugs (Schedule I and IV) as “the separated resin, whether crude or purified, obtained from the cannabis plant”. The resin contains ingredients such as tetrahydrocannabinol (THC) and other cannabinoids—but often in higher concentrations than the unsifted or unprocessed cannabis flower. Purities of confiscated hashish in Europe (2011) range between 4% and 15%. Between 2000 and 2005 the percentage of hashish in cannabis end product seizures was at 18%. With the strength of unprocessed cannabis flowers having increased greatly in recent years—with flowers containing upwards of 25% THC by weight—the strength of hashish produced today and in the future is likely to be far more potent than in these older records.
The consistency and appearance of hash varies depending on the process and amount of leftover plant material (e.g. chlorophyll). It is typically solid, though its consistency ranges from brittle to malleable. It is most commonly light or dark brown in color, though may appear transparent, yellow, black, or red.
Hashish or hash is made from the resin (a secreted gum) of the cannabis plant. It is dried and pressed into small blocks and smoked. It can also be added to food and eaten. The resin is rich in THC, the main mind-altering ingredient found in the cannabis plant. Marijuana also comes from the cannabis plant. It is made from dried flowers and leaves of the plant.
Hashish is a reddish-brown to black colored resinous material of the cannabis plant. Pieces are broken off, placed in pipes and smoked.
As with marijuana, people who use hashish may experience a pleasant euphoria and sense of relaxation. Other common effects may include heightened sensory perception (such as brighter colors), laughter, altered perception of time, and increased appetite.