Some hash production methods are thousands of years old and have been passed on from generation to generation.
Over two weeks in the summer of 1977, more than 4000 kilos of yellow Lebanese hash mysteriously washed up on the southern beaches of the Netherlands.
A group of famous French writers and artists, including Théophile Gautier, Charles Baudelaire, Eugène Delacroix and Alexandre Dumas, experimented with hash in Paris in the mid-19th century.
The Hasheesh Eater (1857) is an autobiographical book by Fitz Hugh Ludlow (1836-1870).
According to cultural anthropologist Mark Liechty, Dev Dhatta Sharma opened his world-famous Eden Hashish Centre in Kathmandu sometime around 1970.