Kief — Cannabis Pollen Explained

What is kief?

Kief (also called «cannabis pollen» or «trichome powder») is made of the resin heads of trichomes — the tiny mushroom-shaped glands on cannabis flowers and sugar leaves. They hold almost all cannabinoids (CBD, CBG, THC), terpenes and flavonoids of the plant.

Unlike bubble hash or rosin, kief is a solventless dry extraction: no water, no alcohol, no heat. Pure mechanical separation. That's why kief preserves the strain's full terpene profile.

Extraction methods

1. Grinder method: a 4-piece grinder with a kief screen (Space Case, Santa Cruz Shredder) collects trichomes automatically. After 20–30 g of ground flower you'll find 0.3–0.7 g of kief in the bottom chamber — the easiest daily approach.

2. Dry-sift: rub flower over a fine stainless steel screen (80–120 µm), ideally frozen (trichomes snap off more easily). Yield 3–8 % of flower weight, noticeably cleaner than grinder kief.

3. Ice-water (bubble) bags: ice, water and flower in stacked micron bags (25/45/73/90/120 µm). Trichomes break off, sink through the bags and are sorted by size. Highest purity, more technical — end product is called «ice-water hash».

4. Press into hash: kief under mild pressure and heat (40–60 °C) compacts into hash. Hand-pressing or a rosin press yields a stable, dark end product in seconds.

Potency & quality

CBD kief from Swiss indoor flower typically tests at 25–50 % CBD (vs. 8–15 % in the source bud). Colour: pale gold to blond = high purity; green = plant material, lower potency.

Quality check: fresh kief burns clean, leaves white ash and bubbles slightly under heat («full-melt»). Green, gritty kief with plant particles burns harsher.

How to use kief

Bowl topping: a pinch (0.1–0.2 g) on a packed bowl noticeably multiplies the effect. The classic use.

Joint boost: roll kief between two flower layers (don't coat the outside — combustion temperature is too high for the terpenes). Combine with a rosin strip on the outside for a «moonrock joint».

Vaporizer: never pure — it drips into the chamber. Mix 1:3 with flower and vape at 190–210 °C.

Cooking/baking: decarb first (110 °C, 30 min), then infuse into butter or coconut oil for 45 min at 70–80 °C. 1 g of 30 % CBD kief delivers ~300 mg of active CBD in the finished product.

Storage

Kief has a huge trichome surface and is sensitive to light, oxygen and heat. Ideal: airtight glass jars (Miron violet-glass, small jam jars), <20 °C, dark. Under clean storage, cannabinoids stay stable 6–12 months, terpenes ~3 months.

Don't refrigerate — condensation each time you open it. Freezer only if the jar is warmed back to room temperature before opening.

Legal in Switzerland

Kief from flower under 1 % total THC is legal in Switzerland — it falls under the same rule as the source flower (Narcotics Act, Art. 2 lit. b BetmG). When concentrating, the finished product must still stay under 1 %.

Careful: from 0.8 % THC flower, kief can quickly climb over 1 % and would then fall under the Narcotics Act. Personal use from certified legal flower is usually uncritical — for retail, strict lab certificates apply.

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