Charas: the origins of hashish

When talking about hashish, it seems clear which is the oldest type of resin: charas. Today we can consult various specialized sources and they all come to the same conclusion; hand-rubbed hash from fresh flowers is almost certainly the oldest known form of hashish and with a difference of centuries from the second-oldest technique (dry-sieving the plant).
Today we are going to delve into the history of this technique (already millenary) and we will tell you how charas is made, which are the areas where this technique is used the most and what are the main differences compared to other ways of separating the resin from the plant without the use of solvents.