I was told by London youth in the 90's that the reason they mixed in this fashion is that weed in Europe was often only available processed into hash-hish to be

I was told by London youth in the 90's that the reason they mixed in this fashion is that weed in Europe was often only available processed into hash-hish to be compact for micro-smugglers so it was easier to have a consistent level with very inconsistent supply potency by varying the amount of tobacco.