Live rosin jam is a solventless, artisan cannabis concentrate known for its vibrant flavor and crystalline, sauce-like texture. Considered a high-end extract, it is produced using only heat, pressure, and fresh-frozen cannabis material, which preserves the plant's full cannabinoid and terpene profile. How it's made The "jam" consistency is a result of a careful post-processing technique called "jar tech," which separates the THCA from the terpene-rich oil.