Hashish, or hash, is a drug made from cannabis. While herbal cannabis is referred to as Marijuana, Hashish is cannabis resin. It is consumed by smoking, typically in a pipe, bong, vaporizer or joint, or via oral ingestion. Depending on region or country, multiple synonyms and alternative names exist.
Hash is an extracted cannabis product composed of compressed or purified preparations of stalked resin glands, called trichomes, from the 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 4-15 %. Between 2000 and 2005 the percentage of Hashish in cannabis end product seizures was at 18%.
Hashish may be solid or resinous depending on both preparation and room temperature; pressed hashish is usually solid, whereas water-purified hashish—often called “bubble melt hash”—is often a paste-like substance with varying hardness and pliability; its color, most commonly light to dark brown, can vary from transparent to yellow, tan, black or red. This all depends on the process and amount of solvent left over.
Besides it is recreational use, hashish’ active ingredient THC has been of interest for research and medical purposes since its arrival in the 18th century.