The revolution that never quite happened? A few years ago, there wasn't a cannabis forum worth its salt without a thread about freeze-drying marijuana. Dry buds in 24 hours, terpenes intact, goodbye to mold… It seemed like drying racks and curing jars had their days numbered! And yet, today almost nobody talks about freeze-drying flowers, while freeze-drying has remained the undisputed queen of Ice or Lator hash. What happened along the way? Is it true that freeze-dried buds are "missing something"? What is freeze-drying? Freeze-drying (also known as lyophilization) is a dehydration technique that removes water without passing through the liquid state. First the flower is frozen and then, inside a vacuum chamber, the ice transforms directly into vapor, which is known as sublimation. The result is dry bud that retains its shape, color and a good part of its volatile compounds. The process is divided into three phases: freezing, primary drying (ice sublimation) and secondary drying or desorption, in which residual water bound to the tissues is removed. The vapor that is released ends up trapped in a condenser. Cannabis flowers in a freeze-dryer