Last Updated: April 30, 2019

Definition - What does Hash mean?

Hash, also called hashish and hash oil, refers to substances made from the kief of the cannabis plant. The sticky, crystal-like kief is a naturally excreted trichome of the cannabis plant’s glands. The plant creates the substance to discourage herbivore consumption and to attract pollinating insects.

The kief crystals occur across the plant but are the most highly concentrated on the marijuana plant’s flowers. The kief of the cannabis plant contains the highest concentrations of tetrahydrocannabinol (THC), which is the substance coveted by users to achieve a psychoactive experience, which is commonly referred to as a ‘high’.

Hash is usually formed and pressed into a block or ball of hard or doughy resin, while hash oil is the liquid accumulated from the trichomes. Both hash and hash oil may contain small pieces of the cannabis plant.

MaximumYield explains Hash

Hash or hash oil is produced when the cannabis plant’s kief trichomes are extracted from the plant to be concentrated into a compact resin or oil.

In the early days, the sticky trichome substance was gathered from the plant by hand by scraping the cannabis plant’s flowers or by running the hands across the surface of the plant.

In later years, a variety of mechanical separation devices such as tumblers were employed. Modern separation devices normally involve heat/pressure separation, static electricity separation, ice/water sieving, or acoustical sieving. Chemical separation (extraction) is the preferred method to extract hash oil. It involves the use of a solvent to filter the oil.

Hash and hash oil are normally consumed orally or smoked. The higher concentrations of cannabinoids in hash make it far more potent than other forms of marijuana. Generally, hash products contain a 50 to 80 per cent concentration level of THC.

This definition was written in the context of Cannabis
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