What Are Solvent-less Extracts?

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Solvent-less extracts are concentrates that are created through a process that removes trichomes from the cannabis plant without the use of an external solvent.

The cannabinoids and terpenes that consumers desire for their recreational and medicinal qualities are produced and stored in the heads of these trichomes. When trichomes are stripped and collected into a concentrated substance, this is known as a solvent-less extract.

What is Hash?

Solvent-less extracts are commonly referred to as “hash” or “hashish”. Hash is its own category of cannabis. It is an “extract”, a “sieving” or a “concentrate” of cannabis flower.

Hash is the oldest form of cannabis concentrate known to man. However, many new and modern forms of hashish have emerged recently, including rosin and bubble hash.

At the end of the day, if you’re removing the trichome from the plant without a solvent (whether you are whipping it with a leather belt or you’re washing it through ice or using any other method) the end product is considered hash.

Types of Solvent-less Extracts.

Kief. Supreme Cannabis.


Kief is essentially a collection of trichomes, which are the tiny, shiny sticky crystals that coat cannabis flowers. Some cannabis consumers will use a multi-compartment herb grinder to collect the trichomes that fall off of cannabis buds as they are milled. This collection of trichomes, or “kief”, can then be consumed in a variety of ways. Kief can be added to cannabis flower in bowls, joints and blunts for an extra kick of cannabinoids. Additionally, kief can be made into hash or rosin using techniques that apply heat and pressure to the substance.

Hash. Supreme Cannabis.

Traditional Hash.

Traditional-style hash is often separated by region or country of origin. The most common countries that hashish comes from are Morocco, Nepal, India, Pakistan and Afghanistan, among others. This form of solvent-less concentrate usually contains between 5-40% THC depending on the potency of the starting material and the quality of the extraction process.

Hash can be smoked, combined with cannabis flower or used in the cooking and baking of edible cannabis products.

Sift Hash. Supreme Cannabis.

Dry Sift Hash.

Dry sift hash is a form of solvent-less concentrate that derives its name from the process used to make it. The dry sift technique requires using screens with fine mesh to hand-sift the dried cannabis buds, removing the cannabinoid-filled trichome glands and eventually producing an extract with a granular-like consistency.

Dry sift is a versatile substance that can be consumed in a number of ways. Similar to kief, dry sift hash can be pressed into rosin or turned into traditional-style hash. Dry sift can also be added to any joint, blunt or bowl for additional potency.

Live Rosin. Supreme Cannabis.

Live Rosin.

Live rosin is a unique solvent-less extract that is usually made by pressing bubble hash that was derived from freshly frozen (AKA live) cannabis flowers. Cannabis plants are cut down, the large fan leaves are removed, and the buds are frozen before any sort of drying happens. Extractors will then turn these freshly frozen flowers into a solvent-less extract using one of the previously mentioned techniques. Consumers enjoy live rosin for its robust and unadulterated terpene profile.

Some hash-makers would refer to live rosin (and similar concentrates) as not true hash, since they aren’t technically full spectrum and the plant wasn’t grown and cured to full term.

Rosin. Supreme Cannabis.


Rosin is a solvent-less concentrate that is created through an extraction procedure that uses heat and pressure to force the precious cannabinoids and terpenes within the trichome glands out of the cannabis plant and into a concentrated product for consumption. This process is often compared to squeezing the juice out of a fruit or the oil out of an olive.

Cannabis can be pressed into rosin by a professional with an industrial press or made at home with a hair straightener.

History of Rosin.

There is still some debate regarding the origins of rosin. However, many believe that the solvent-less extract was first introduced around 2006 in an online forum known as ICMag (International Cannagraphic Magazine) through a member that had the username “Compashon”.

Almost a decade after this, rosin started to gain popularity among concentrate enthusiasts. In 2015, Phil Salazar, also known as @soilgrown_solventless on social media, started sharing pictures of rosin that he created by accident while experimenting with some old dry hash. After mistakingly discovering that an oil could be extracted from cannabis flower and physically-concentrated extracts, he began testing many methods and tools for rosin production, including his wife’s hair curler. He shared all of his findings on social media, which encouraged many others to try it for themselves. In the years since its creation, rosin extraction has evolved to encompass myriad different processes and product types.

Learn more here.

Ice Water Hash. Supreme Cannabis.

Ice Water Hash.

Ice water hash, also known as bubble hash, ice wax or wet sift, is a solvent-less concentrate that is made by sifting the trichomes of dried cannabis flowers with the addition of ice water. Trichomes are sifted through a series of screens that are submerged in the presence of water and ice cubes while simultaneously removing any contaminants and unnecessary plant material.

This form of hash is commonly consumed through dabbing, but similarly to the other types of hashish, can also be added to flower for increased potency.

History of Ice Water Hash.

After discovering that trichomes sink when placed in water, Sadhu Sam (AKA the “Skunkman”) established the first hashish making process that utilized water in the 1980’s. In the 90’s, a Canadian entrepreneur and activist known as Marcus Richardson (AKA the “bubbleman”) appeared on the hash-making scene, eventually transfiguring the solvent-less concentrate world with his “bubble bag” extraction system.

Solvent-less vs Solvent-Based.

Solvent-less extracts are preferred by many because they deliver the same potency, taste and experience as solvent-based extracts without the potentially harmful chemicals that those extracts require.

Some consumers also prefer solvent-less products because they generally require a lower temperature when vaporizing. Solvent-less extracts require less heat for vaporization because they don’t go through a process of removing fats and lipids.

How To Consume Solvent-less Extracts.

Solvent-less extracts can be consumed in a few different ways. They can either be combusted, vaporized or infused.

When combusted, solvent-less concentrates like dry sift and rosin can be added to cannabis flower and smoked in a glass bowl, joint or blunt. Although these types of extracts can technically be smoked, it is likely not the most effective way to experience all of the potential effects and benefits.

When vaporized, solvent-less products can be dabbed in a rig (the preferred method among many concentrate enthusiasts) or vaped through a pen or device designed for concentrates. It is important to take into account the temperature when vaporizing cannabis concentrates. The optimal temperature for vaporizing most solvent-less concentrates is somewhere between 160°C and 280°C.

Aside from smoking or vaporizing solvent-less concentrates, you can also use them in a variety of infusions including edibles and topical products. Most forms of solvent-less concentrate can be directly added to food while cooking, or easily infused into butters and oils. Solvent-less extracts like rosin are already activated, meaning there is no need for decarboxylation.

Concentrates bong. Supreme Cannabis.


Storing solvent-less concentrates can be challenging, but proper storage is essential for maintaining optimal quality of the product. Most forms of solvent-less extract are too sticky for glass containers or jars. For short-term storage, medical-grade silicone containers are ideal, since it’s much easier to remove the extract for convenient consumption. However, silicone containers are not air-tight and long-term storage in these contains will lessen the extract’s potency and flavour. For longer periods, it is recommended to keep solvent-less concentrates in a vacuum-sealed bag inside of an air-tight container located in a dark, dry and cool location.

Solvent-less Extracts in Canada.

Hash and solvent-less concentrates have a lengthy history in the Canadian informal market. Consumers have been making their own or buying solvent-less concentrates for several decades. Hash has been more prevalent and popular than dried cannabis flower during certain times and in certain areas of Canada. According to the Senate of Canada, “between 1980-1985, cannabis derivatives (marijuana, hashish and liquid hashish) were the most readily available and most widely used illicit drugs in Canada.”

Cannabis derivative products including solvent-less concentrates became legal in Canada on October 17, 2019. Some of the first legal cannabis concentrates are starting to appear on the market available for recreational consumers.

The Supreme Cannabis Company’s flagship recreational brand 7ACRES is currently working to develop dabbable concentrates and vaporizable cartridges for the Canadian market.

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