What is Rosin?
Rosin is a simple but powerful method for plant oil extraction. Originally, the technique was developed for a wholly different purpose—the lubrication of violin bows.
Rosin works through the application of heat and pressure, and may be used on flowers, kief, or plants. Is rosin the same as shatter?The resulting product can be quite similar, and can certainly rival shatter in terms of quality. Indeed, it may be far more pure.
The problem with other extraction methods is that they require you to introduce propane, butane, or other light hydrocarbons into your flowers while you are processing it. Once initial processing is complete, these impurities remain, so you must then subject the product to a further purge process.
Even after that is complete, chances are good there will still be some leftover hydrocarbons in your plant oil. Needless to say, that is not something you want to put in your body.
The rosin press removes the hydrocarbons from the picture entirely. Since they are never introduced in the first place, there is no need to purify your oil afterward—it is already pure.
In all other respects, the product the rosin press produces is virtually impossible to tell apart from shatter. It has the same
clear, amber-like appearance, and it is comparable in terms of scent as well as flavor. It also is just as rich in terpenes.