Kief
Definition: Kief is the loose, powdery collection of trichome heads that break off cannabis buds and trim. The fine, pale golden or greenish dust holds much of the plant's resin, so it is more concentrated than the flower it came from. Growers gather it with fine mesh screens, grinders with catch chambers, or dry sifting.
How Kief works
The frosty coating on good cannabis is made of trichomes, tiny resin glands shaped like mushrooms. Their bulbous heads hold most of the cannabinoids and aromatic compounds. When those heads snap off and collect, you get kief.
Ways to collect it
- Three-chamber grinder: a screen in the grinder lets loose trichomes fall into a bottom chamber over time.
- Trim tray with screen: buds and leaves are handled on top of a mesh, and kief drops through during trimming.
- Dry sifting: dried trim or small buds are gently worked over stacked screens, often in the 70 to 160 micron range, to separate heads from leaf.
Getting cleaner kief
Cold makes trichome heads brittle. Freezing trim for an hour or two before sifting helps heads snap off cleanly. Gentle, brief agitation gives purer, lighter-colored kief; rubbing hard pushes more green plant material through the screen. Many growers do a quick first pass for the best quality, then a harder second pass for volume.
Using and storing it
Adults sprinkle kief on flower, add it to infusions after decarboxylation, or press it with heat and pressure into blocks of hash. Store it in a small airtight glass container in a cool, dark place, since light, heat, and air degrade it faster than whole buds.
Why growers save it
Trim that would otherwise be thrown out can yield a meaningful amount of kief, especially from resin-heavy strains, so collecting it adds value to every harvest.