How To Air Dry Bubble Hash - The Press Club

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Drying is an essential phase in the creation of high quality bubble hash. Bubble hash is made through a process called ice water extraction, in which extractors mix cannabis and ice water together causing trichomes to fall away from the cannabis material. Extractors then filter these trichomes through a series of screens known as bubble wash bags, in order to separate the full trichome heads from the starting material. 

The main determination of the quality of bubble hash is the overall quality of the cannabis starting material. The extractor’s skill in isolating and collecting only the trichome heads without excess plant contaminants, like tiny pieces of green material and trichome stalks, also determines bubble hash quality. 

Another factor that’s sometimes overlooked regarding the overall quality of bubble hash is the drying process that’s used after production. Bubble hash is completely saturated with water right after it’s extracted. 

Properly drying the hash not only prevents it from being ruined with mold, it helps bring out its finest qualities.

 

 

But drying hash hasn’t always been necessary, because hash hasn’t always been made with water. People have been making hash in some form or another for thousands of years. It wasn’t until the end of the 20th century that the ice water extraction method came onto the scene. Once this innovation was employed, the techniques to thoroughly and efficiently dry bubble hash also began to develop. 

Regardless of the intended use, whether in preparation for smoking, dabbing, aging, or pressing rosin, it’s essential to dry bubble hash after ice water extraction. 

Fortunately, drying bubble hash doesn’t require a lot of tools or equipment. Although high tech drying equipment does exist (and is arguably the best option to give you ideal results), it’s possible to make premium hash that’s air dried on a piece of parchment paper and cardboard. 

Different methods of drying bubble hash call for varying levels of environmental control. For example, using a freeze dryer to dry bubble hash is a totally automated process that requires very little input from the extractor. But with air drying, it’s essential for the extractor to carefully control the preparation of the hash, temperature, humidity of the drying environment, etc. 

The technology of a freeze dryer pulls moisture from the inside of a wet batch of hash, drying it thoroughly and quickly via sublimation and a vacuum. This means that moisture locked inside the center of a thick layer of wet hash can be quickly and completely removed. However, when air drying, moisture needs to naturally evaporate away. Moisture inside thick patties of wet hash can get locked inside and lead to mold growth, which ruins the hash. This is why extractors break the wet hash into tiny pieces and spread it out in a very thin layer to air dry. 

Moisture leaves bubble hash through a process of either evaporation or sublimation. Evaporation happens over the course of several days when bubble hash is exposed to air. There are different approaches to letting bubble hash air dry, including within a cold room or wine cooler. There are also different ways to prepare hash for air drying.

Sublimation happens within a freeze dryer, and it’s a more expedient way to dry bubble hash. Although freeze dryers tend to deliver consistently better results, air drying hash is still a feasible way to get an excellent full melt product. 

Let’s take a look at the different techniques used to dry bubble hash. 

Air Drying

Air drying is a straightforward approach to drying bubble hash. Hash is collected from the bubble wash bags in totally saturated globs of trichomes. These wet hash patties are placed on a 15 or 25 micron screen and then lightly patted to coax out some water. After the extraction is complete, the hash goes into the freezer for 24 hours until it's completely frozen. 

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