When it comes to producing hashish, there’s more than one way to get the fine results you’re looking for. The underlying requirement for producing this type of concentrate is agitation of the source material which causes the trichomes (resin-filled glands) to break loose from the flowers.
Current popular methods of agitation include shaking, vibrating, and tumbling. Bubble hash using ice water agitation is also common. However, more novel ways are beginning to gain popularity such as agitation using sound waves.
Cannabis retailer Jetty Extracts has a team of DJs that use a Sound Hash™ amp to shake loose golden kief from dried cannabis material. In their own words:
“The sound waves create the mechanical separation using deep heavy bass tones. Our rig has a lower frequency range than what’s generally available–you can’t put weed on your home stereo and expect to make hash.”
Their source material sits on a 200 micron screen along with pieces of dry ice situated above successively smaller screens that filter out plant material and produce a clean kief that can be pressed to form hashish.
Another way of employing sound waves is known as ultrasonic extraction. The term ultrasonic refers to sounds that are above the range of human detection. With this method, rapidly pulsating ultrasonic vibrations are introduced into the medium containing the source material which may be an edible oil, such as coconut or olive, or a solvent, such as supercritical carbon dioxide. Whether ultrasonic sound waves could be used to create hashish remains to be seen.
Both sound wave and ultrasonic extraction are gentle forms of extraction. During their processes, the plant’s terpene and cannabinoid profiles are well-preserved and harsh solvents are not required resulting in full-spectrum products that capture the characteristics of the plants from where they came.