Hash rosin allows you to experience the purest flavors from some of the finest cannabis the market has to offer. It is a solventless extract often made by pressing bubble hash that was made from freshly frozen, or live, flowers. This process captures the live terpene profile of the cannabis plant without the use of solvents because bubble hash is more of a water sieve than extraction. Hash rosin tests at about a 75 to 85 percent cannabinoid content with a 4 to 15 percent terpene content.