Rosin can be pressed from two kinds of starting material. Flower rosin is pressed directly from dried flower: simpler, but it carries more plant lipids, chlorophyll and other compounds from the plant tissue into the oil, and it usually has a lower yield per gram of resin present. Hash rosin is pressed from hash, most often ice water hash or dry sift, which has already had most plant matter removed. Hash rosin made from fresh frozen material is live rosin.
In practice
Among solventless makers, hash rosin is widely considered the higher-grade product: cleaner, more consistent texture and better flavour. Flower rosin remains popular with home consumers because it needs only the flower. In both cases the outcome depends mainly on the starting material: rosin can't improve poor hash or poorly grown flower. GenetixBay defines the products only and gives no pressing settings.
Don't confuse with
- Live rosin: hash rosin made from fresh frozen material.
- Pressed hash: compressed solid hash, not an extracted oil.
- Resin (live or cured): solvent-based extracts.
Rosin is a solventless concentrate: resin squeezed out of flower, kief or hash using heat and pressure, then collected as an oil free of plant material.The green pigment in chloroplasts that absorbs mainly blue and red light to drive photosynthesis; chlorophyll a and b are the main forms in plants.Hash is any concentrate made by separating trichome heads from cannabis and collecting or pressing them, from dry sift and ice water hash to hand-rubbed charas.Bubble hash, or ice water hash, is a solventless concentrate made by separating trichome heads from cannabis in cold water and collecting them on graded mesh bags.Kief is the loose, powdery collection of trichome heads that falls or is sifted off dried cannabis through fine screens; it is the simplest solventless concentrate.Fresh frozen is cannabis frozen immediately after harvest without drying or curing, used as starting material for live resin and live rosin to keep more volatile aroma.Live rosin is rosin pressed from ice water hash made from fresh frozen plants, preserving more of the volatile aroma of the living plant; it is solventless.Solventless describes cannabis concentrates made only by mechanical or physical separation, using screens, ice water, heat or pressure, without chemical solvents.
