Rosin made from hash, or hash rosin, is considered by many to be one of the purest forms of cannabis concentrate. Cannabis rosin is made by combining high heat and immense pressure. Terpene and cannabinoid-rich oil (resin) is forced out of cannabis plant material called trichomes using a rosin press.Smackin, often stylized delightfully as sMACKin, is a rare hybrid strain. It's the offspring of a MAC and Grandaddy cross, MacDaddy, and the London Pound Cake and Kush Mints cross, Pancakes. That's a lineage with ample cookie, cake, and purple genetics. This strain smacks you to the couch and leaves you there to soothe pain and zen out. It's hard to find and all the more treasured for that reason, so don't slack when sMACKin is available near you.