Bubble hash is graded by how cleanly it melts when heated: “full-melt” (5–6 stars) vaporizes almost completely and is clean enough to dab, “half-melt” (3–4 stars) bubbles and partially melts — ideal for bowls — and “food grade” (1–2 stars) is best for cooking or pressing. The melt tells you how much pure, intact resin is in the hash versus plant material.
When you shop the bubble hash section, three things determine what you're getting: the star grade, the micron range it was collected in, and the starting material. Here's how to read all three like a buyer who knows what they're doing.
By The Cheebas Product Desk · Published July 2026
The star scale is a melt test, not a marketing sticker. 6★ disappears on a hot surface leaving almost no residue — dab-grade, rare, priced accordingly. 5★ melts nearly clean with faint residue. 4★ bubbles enthusiastically and melts most of the way — the sweet spot for bowl smokers who want quality without top-shelf pricing. 3★ bubbles, partially melts, smokes beautifully mixed with flower. 1–2★ stays mostly solid — don't smoke it neat; cook with it or press it into traditional-style hash. A vendor who grades honestly will tell you a 4★ is a 4★; that honesty is exactly what we check for when a batch comes in.
During ice-water washing, resin passes through a stack of mesh bags. The micron number is the mesh size that caught it:
| Micron range | What collects there | Typical use |
|---|---|---|
| 25–45μ | Smallest heads + fine particulate | Edibles, pressing, blending |
| 73–90μ | The “prime” zone: intact, ripe trichome heads | Full-melt candidates, dabbing, top bowls |
| 90–120μ | Larger heads, some stalks; strain-dependent gold | Premium bowls, rosin pressing |
| 120–159μ | Big heads + more plant matter | Bowls, joints, pressing |
The famous “73u” on premium jars refers to that prime zone — but don't fetishize a single number: some strains dump their best resin at 90μ or 120μ. A skilled washer blends or separates by what the plant gave, which is why “full-spectrum” washes can outperform single-micron fractions.
Yield. A wash might produce only a small fraction of true 5–6★ material — the rest lands in lower grades. Add fresh-frozen starting material, freeze-drying, and skilled labour, and $17+/g is honest economics, not markup. Our 2026 hash price guide maps every grade to its fair price band.
Every bubble hash listing at Cheebas states its character honestly — and if you're still deciding between washed and sifted styles entirely, start with Bubble Hash vs Dry Sift or the full Complete Guide to Hash in Canada.
What does full-melt mean?
Bubble hash clean enough to melt almost completely when heated — 5–6 stars on the melt scale, suitable for dabbing.
Is 73 micron the best bubble hash?
73–90μ is the classic prime zone, but the best fraction varies by strain — judge the melt, not just the number.
Can you dab 4-star bubble hash?
You can, but expect residue. 4★ shines in bowls; save the rig for 5–6★.
What's the difference between bubble hash and piatella?
Piatella is top-grade bubble hash that's been cold-cured into a smooth, creamy consistency — same origin, refined finish.
Educational content for adults of legal age in Canada. Start low, go slow, and never drive impaired.