Bubble hash is essentially isolated trichomes which have been collected from cannabis plants using cold water and ice, which are then filtered by micron size and dried for consumption. For those that don’t know, the reason it’s called “bubble” hash is because it bubbles when heated and vaporized as opposed to denser hashish which tends to simply melt instead. There is some debate whether dry sifted trichomes can also technically be known as bubble hash, but we tend to believe that sift is in its own separate category. Divided into a variety of quality grades known as the star system, bubble hash is graded from one to six stars depending on its color, aroma, and most importantly how much residue is left when vaporized. The very best bubble hash is known as six star, or “full melt”, because it leaves very little to no residue behind when vaporized, proving its purity. Bubble hash was originally made with trim and dried flowers, but more recently processors have made the transition to using fresh frozen cannabis in order to make a truly “live” bubble hash that preserves the full complexity of strain at maturity. While this technique is dominant today, we’ll see later in this article why this may slowly start changing as new information emerges about terpene changes in dried cannabis. The hash I made is considered 1,2 and 3 star quality.