By definition, rosin is a cannabis extract made using heat and pressure—cannabis plant material is placed in a press with heated pads and then compressed, squeezing out hot oil. The process is solventless, so no solvents or chemicals are used in creating rosin. This process was originally used to create rosin for violin bows, which is how the concentrate gets its name. People love rosin because it is more flavorful than other cannabis concentrates and because no chemicals or solvents are used in the creation of it. The taste is cleaner, more pure, and more terpy. Compared to other extracts, it is typically less potent, but it depends on the source material used to make it.