Making hash

Hash (also called hashish) is made from the sticky substance (trichomes) found on marijuana. Some methods are thousands of years old.

The strength, smell and other properties of the hash depend on the plant's genetics. It is made in various different ways, but the process is always completely natural and does not include the use of chemical additives. Illustrations of these methods can be seen in the museums in Amsterdam and Barcelona, along with different kinds of hash-making equipment.

Different types of hash

Making hash with a sieve

Most types of hash are made by rubbing dried plants over a very fine mesh. The trichomes then fall through the sieve, separating them from the plant matter. The collected resin glands are then worked with heat and pressure to form a coherent mass of hashish. Sieved hash tends to be harder and denser than hand-rubbed hash, as it is often mechanically pressed; it can vary from light brown and dry to very black and sticky.

Making hash by hand

Charas is made by rubbing the hands over the flowers of living female plants, to detach trichomes (tiny resin glands which produce the plant’s active components) from the flowers. The resin is then scraped from the palms and compressed by hand into a homogenous ball. It is usually dark brown or black, slightly sticky and soft at room temperature.

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On display here: 

Many of the displays in our museums are devoted to the cultural aspect of cannabis use. Pipes and smoking devices from all over the world demonstrate how different cultures have imbibed marijuana and hashish: they illustrate the various ways to smoke weed.

"Marijuana is a useful catalyst for specific optical and aural aesthetic perceptions. I apprehended the structure of certain pieces of jazz and classical music in a new manner under the influence of marijuana, and these apprehensions have remained valid."

Cannabis has a long history as an aid or complement to inspiration in art, philosophy, music and most other kinds of creative human endeavour. Art and cannabis go well together.