look in high times magazine. From the articles I've read they rub Indica/hash plant type buds between their hands until they have resin all over their palms and then rub their hands back and forth until they get pencil like strands of black hash and then let it dry and smoke. the absolute best black hash has white stripes of opium( real opium no bullshit) pressed in between layers of the black hash.Talk about something that is the best,tastes the best,that is it,although the 1st and last time I smoked it was about 1979 and that was the dealers stash.Tastes like vanilla icing,gets you incredibly fucked up. I cut the opium stripes out with a razor blade and smoked them straight, 3-4 hits, talk about fucked up i stashed the shit while stoned and it took me three weeks to find it.