Interviews with defectors also suggest that North Koreans are not serious consumers of marijuana. The drug of choice is, in fact, something much more pernicious: crystal meth.
Meth, known colloquially as eoreum or bingdu (both mean “ice”, a name by which the drug is also known in the US) is a drug unfortunately suited to the realities of life in North Korea: it is cheap, requires no elaborate equipment or specialist knowledge to make, and keeps the weary and hungry on their feet – at least until they become addicts.
—Daniel Tudor and James Pearson writing in The Guardian about the recreational habits of North Koreans, from smoking to homebrewing to coping with crystal meth.