Editing Hashish (section)

== Quality ==
Tiny pieces of leaf matter may be accidentally or even purposefully added; [[adulterant]]s introduced when the hashish is being produced will reduce the purity of the material and often resulting in green finished product. If hash is particularly sticky, this can mean that additional oils have been added to increase the overall weight of the product. The most common quality indicator is the smell. High-quality hash will smell fragrant and aromatic, whereas hash of low quality may have a distinct mouldy or musty aroma.<ref>[https://www.zamnesia.com/blog-how-to-recognise-high-quality-hash-n2188 Zamnesia] {{Webarchive|url=https://web.archive.org/web/20210418145014/https://www.zamnesia.com/blog-how-to-recognise-high-quality-hash-n2188 |date=2021-04-18 }} How to determine high-quality hash</ref> The [[tetrahydrocannabinol]] (THC) content of hashish comes in wide ranges from almost none to 65% and that of [[hash oil]] from 30% to 90%.<ref>{{Cite book |last=Inciardi |first=James A. |title=The War on Drugs II |year=1992 |publisher=Mayfield Publishing Company |location=[[Mountain View, California|Mountain View]], [[California|CA]] |isbn=1-55934-016-9 |page=19}}</ref> Hashish can also contain appreciable amounts of CBD, CBN and also contain trace amounts of other [[cannabinoid]]s.<ref>{{cite web|title=The main cannabinoids content in hashish samples seized in Israel and Czech Republic|url=https://lumirlab.com/publication/the-main-cannabinoids-content-in-hashish-samples-seized-in-israel-and-czech-republic/|access-date=2020-06-09|website=Lumir Lab|archive-date=2020-06-09|archive-url=https://web.archive.org/web/20200609074302/https://lumirlab.com/publication/the-main-cannabinoids-content-in-hashish-samples-seized-in-israel-and-czech-republic/|url-status=live}}</ref>

As mentioned above, there has been a general increase in potency as the competition has grown bigger and new hybrid plants have been developed.<ref name="ChouvyBackground" />