Hash (or hashish) is concentrated cannabis resin: the cannabinoid- and terpene-laden trichomes that coat the buds, separated, pressed and shaped, usually into a slab. It’s considerably more potent than weed and, depending on its origin and how it’s made, comes in many different types. In this Cannactiva guide we explain what it is, its types, its composition, how it’s made, how to tell good hash and its legal status.
Today, thanks to cannabidiol-rich hemp strains, you can buy CBD hash that’s legal in many European countries (each country has its own rules, and in some, such as the UK, hemp flower and hash are controlled even when they contain little THC): the same aroma as classic hash, but without the psychoactive effects of THC. And if you want to go straight to the best option, we’ve put together a comparison of the best CBD hash.
In short:
- Hash is concentrated cannabis resin: pressed trichomes, much more potent than the buds themselves.
- It goes by many street names: resin, solid, pollen, rocky, black… (in Spain, “costo” or “chocolate”).
- There are many types depending on extraction and pressing: pollen or dry sift, bubble hash, slab, Moroccan, Afghan, Lebanese…
- Good hash can be recognised by its aroma, texture, colour when broken and the flame test (full melt).
What is hash?
Hash is a cannabis product made by separating the resin-filled trichomes from the cannabis plant, then pressing and shaping them, commonly into a slab.
One clarification saves a lot of confusion: the loose trichomes separated from the bud by sifting are pollen (or kief), and they’re not hash yet. Hash is born when that pollen is pressed with controlled heat (around 80–90°C): the resin heads fuse together and form a stable mass. That’s the line between loose pollen and hash.
In terms of potency, hash is far stronger than cannabis flower: while buds usually contain between 15 and 30% cannabinoids, hash easily reaches between 40 and 60% (or more, depending on the extract). In other words, double the concentration or more.
Hash is a very popular drug in parts of India, Pakistan, Afghanistan, Nepal and Morocco. In Spain, until fairly recently, hash was more widely used than cannabis flower itself, and it came mainly from Morocco. The fascination with hash is nothing new: in 19th-century Paris, writers such as Baudelaire, Victor Hugo, Balzac and Dumas met at the Club des Hashischins to experiment with its effects.
Composition of hash
Hash is, in essence, concentrated resin from cannabis buds. When we analyse it, we find two large families of compounds, cannabinoids and terpenes:
- THC: the most abundant cannabinoid in traditional hash and the one responsible for its psychoactive effect.
- CBD: in some traditional strains (Moroccan or Afghan landraces) it can be the second most abundant cannabinoid, and it’s the dominant one in legal CBD hash, where it brings relaxation without getting you high.
- Minor cannabinoids: such as CBG, CBC and CBN. Their proportion varies with the genetics and the age of the resin: there are CBG-rich strains, while CBN tends to increase as hash ages and THC oxidises (there are even hash products formulated to boost it, such as Gold'n CBN Hash).
- Terpenes: responsible for aroma and flavour (beta-caryophyllene, limonene, myrcene, pinene…), among hundreds of others.
This concentration of cannabinoids and terpenes in so little material is exactly what makes hash much more potent and aromatic than the flowers it comes from.
What hash is called: resin, solid, pollen, rocky…
Hash goes by plenty of street names, and knowing them helps you understand what people mean in each case:
- Resin / solid: the two most widespread names in the UK; “solid” sets it apart from weed. In Spain, the everyday names are “costo” and “chocolate”, the latter a reference to its colour and texture.
- Pollen: loose, unpressed hash with the powdery texture of sifted trichomes (dry sift). We explain the differences between hash and pollen.
- Rocky: low-quality hash, usually hard and with more plant matter. Its Spanish counterpart, “apaleado” (or “apaleao”), takes its name from being pressed by beating.
- Temple balls: portions of hash hand-pressed into a ball; in Spain, a portion pressed into a ball or acorn shape is called a “bellota” (acorn).
- Hueva: in Spain, a very tightly pressed ball of hash; the name is used mainly in the south of the country.
- Dope, black: older and regional names for the same product; in Spain, “jachís” and “achís” are regional and phonetic variants of “hachís”.
The difference between hash and resin or solid? None: they’re the same thing, only the name changes.
Types of hash
Depending on its origin and, above all, on the extraction and pressing method, there are many types of hash. These are the best known:
Pollen or dry sift
Trichomes separated dry by sifting; they’re left loose or lightly pressed, with a powdery texture. It’s the base of many other types of hash. We cover it in depth in what dry sift is and how it’s made; when it’s very light in colour and aromatic, it’s known as blonde pollen.
Bubble hash and Iceolator
Both are made with the same method: water and ice separate the trichomes without solvents (what’s known as ice water hash); the result is a very clean, aromatic hash. The difference isn’t in the technique but in the product: Bubble Hash is the standard version of this family, while Iceolator has the highest CBD concentration and the most carefully selected raw material — our premium hash.
Slab hash
The classic, pressed into a slab. It’s the traditional format of Moroccan hash. More on hash slabs.
Temple balls and charas
Hand-pressed hash: charas is made by rubbing the live plant between the hands until dark balls form; temple balls (the Spanish “bellota”) are portions pressed into a ball.
Moroccan, Afghan, Lebanese, Pakistani and Turkish
Traditional types by region and pressing, each with its own colours, aromas and textures (from golden Moroccan to black Afghan).
Type | How it’s made | Appearance | Potency |
|---|---|---|---|
Pollen / dry sift | Dry sifting | Golden, loose powder | Medium |
Bubble hash / Iceolator | Water and ice (ice water) | Sandy, light | High |
Slab / pressed | Kief pressed into a slab | Brown slab | Medium–high |
Temple balls / charas | Hand-rubbed and hand-pressed | Dark ball | Medium |
Moroccan / Afghan | Sieve + hot pressing | Golden to black | Medium–high |
CBD hash | Resin from CBD flower | Premium brown | No high (CBD) |
Each family has its own character. We go into detail in the main types of hash.
What is legal hash?
Today, with the development of new low-THC cannabis strains, it’s possible to make traditional hash that’s fully legal in many European countries (in most of Europe, THC cannabis isn’t legal and each country has its own rules; in some, such as the UK, hemp flower and hash are controlled even when they contain little THC). Cannactiva offers you CBD hash of the highest quality, made from our best CBD cannabis strains, with no THC or only negligible amounts (less than 0.3%). Now you can enjoy all the aroma of good cannabis hash, without the side effects THC sometimes causes.
Legal sale makes it possible to guarantee that hash is produced properly, safely and free of contaminants, without giving up the aromas many people associate with this traditional preparation.
Which CBD hash can you buy from Cannactiva?
Use the discount code HASH20 to get 20% off your next hash order.
How is hash made?
Where does hash come from?
Cannabis is covered in tiny resin glands, also known as trichomes. These glands cover its flowers, stems and even its weed leaves, and they develop during flowering, when the plant starts to form its buds.
In fact, the main sign that buds are ripening — when the grower knows they’re ready for harvest — is the look and colour of the resin, which turns cloudy and amber as flowering progresses (you can see how to identify mature trichomes). That change happens because the trichomes are filling up with cannabinoids and terpenes, which is why this resin “gets you high”: it produces the same effects as cannabis flowers (or stronger ones).
A curious fact: the plant produces more trichomes as a defence against climate stress, not when it lives in ideal conditions. That’s why dry regions with long summers, such as Morocco’s Rif, have historically been the cradle of potent hash: the harsh climate pushes the plant to armour itself with resin.
The effects of hash will vary depending on the type of cannabis the resin comes from and its percentage of CBD or THC.
Hash-making methods
There are various traditional methods for making hash, either from the live plant or from dried and cured flowers. Although the techniques vary, the result is always the same: compacting the resin. We take you through it step by step in how CBD hash is made.
Broadly speaking, the artisanal, solvent-free methods are:
- Dry sifting (dry sift): the trichomes are separated from dried flowers using mesh screens; the result is pollen.
- Hand rubbing (charas): the live plant is rubbed and the resin gradually builds up; it’s the oldest method.
- Water and ice (bubble hash): the trichomes are separated with cold water, a technique popularised by Mila Jansen with her Ice-o-lator.
There’s a technical point here that many people overlook: artisanal hash is sifted, not extracted. No solvent is involved (unlike BHO and other solvent extractions); the resin heads are simply separated and pressed. As master hashishin Frenchy Cannoli put it in The Lost Art of the Hashishin: “Hash is sifted resin pressed with heat; it’s sifted, not extracted”.
The real art comes afterwards: pressing and curing the hash. Heat and pressure rupture the resin glands and release their oils, and subsequent curing — weeks or months in controlled conditions — darkens the hash and develops its full aroma. It’s the resin’s “second life”.
Hash aromas
Much of hash’s appeal lies in its aroma, which comes from the terpenes in the resin and intensifies with pressing and curing. Each tradition has its own profile: Moroccan hash tends to be soft and floral, while Afghan and Lebanese are spicier. Modern bubble hash keeps fresher, fruitier notes, especially when it’s made from fresh frozen plant material — what the industry calls live: freezing freshly cut flower instead of drying it preserves the most volatile terpenes, which would otherwise be lost — whereas dry sift pollen hash always starts from dried flower and has a more earthy, classic aroma.
How can you tell if hash is good?
The biggest drawback of hash, especially if you don’t know where it comes from, is that it may be mixed with other substances. The black market has always taken advantage of the lack of controls to mix, or cut, hash with all sorts of things, some of them very harmful, such as tar, plastics or even tyres.
So the first thing to consider when buying hash is to make sure of its origin. That said, there are clear signs of quality:
- Aroma: intense, natural and of cannabis (terpenes). A plastic, rubbery or chemical smell is a bad sign.
- Texture: pliable; it softens with the warmth of your hand and holds its shape. Neither so dry that it crumbles nor gummy from too much moisture.
- Colour when broken: even all the way through, with no plant matter or “filler”.
- The flame test (full melt): when you hold a flame near it, good hash bubbles and melts, leaving a light, almost white ash. Black ash that doesn’t melt gives away impurities. Connoisseurs rate this purity on a scale of 1 to 6 stars: the coveted 6-star (full melt) melts completely without leaving any residue.
- Origin and lab results: traceability and a certificate of analysis (COA) are the best guarantee.
Low-quality hash can be contaminated with dirt, plastic, oils and the like, which make it dangerous to consume. In fact, tests on hash sold on the street revealed resin adulterated with traces of faecal bacteria (samples collected on the streets of Madrid). Legal sale of CBD hash guarantees that the resin has been produced in optimal conditions.
What’s the difference between hash and weed?
Hash and cannabis flower come from the same plant, Cannabis sativa, which gives us both cannabis and hemp. When we talk about cannabis here, we mean the whole cannabis plant or, more specifically, its flowers (the buds), used for millennia for their relaxing and psychoactive effects. Hash is made by extracting and pressing the resin that coats those flowers.
Hash has a higher THC concentration than cannabis flower, because it’s a cannabis concentrate and concentrates the cannabinoids.
In terms of effects, the main difference between cannabis buds and hash is that hash is much stronger, as it concentrates all the plant’s resin.
THC content of hash and cannabis flower
THC content is much higher in hash than in buds. While cannabis flower usually contains between 15 and 30% THC, hash can reach between 40 and 60% purity or even more, depending on the type of extract. Solvent extractions such as BHO can exceed 90%, but that’s another category altogether: this guide focuses on artisanal hash (sifted, not extracted), whose usual range is that 40–60%. In the case of CBD hash, the most abundant cannabinoid is CBD rather than THC.
Also, unlike cannabis flower, hash contains little fibre or plant matter.
What effects does hash have?
As hash is a cannabis concentrate, it has the same kinds of cannabinoids and terpenes, but in higher concentrations. So its effects are basically the same, if anything magnified.
The effects depend on the strain it’s made from, as well as on the presence and amount of cannabinoids and terpenes:
- If the original strain has high levels of THC (delta-9-tetrahydrocannabinol), the hash will have more cerebral, psychoactive effects.
- If the strain is CBD-dominant, it will have more physical, relaxing and anxiolytic effects.
So, depending on this dominance, hash can produce very different effects: relaxation, euphoria, increased appetite, laughter, pain relief, drowsiness…
What are the side effects of hash?
As it’s a cannabis concentrate, samples with very high THC levels are more likely to cause side effects: a racing heart, dry mouth, anxiety, “whiteys”, short-term memory loss, headache, lack of coordination or, in extreme cases, paranoia. They are, at heart, the effects of cannabis on the brain amplified by the high THC concentration.
Hash made from CBD flower, like Cannactiva’s, contains no THC or only negligible amounts (less than 0.3%), so it lacks those side effects: CBD hash brings out the most relaxing and anxiolytic side. And if you’d rather avoid combustion, the most convenient everyday alternative is to buy CBD oil in a dropper bottle.
Where can you find good hash?
At Cannactiva’s CBD shop you can buy CBD hash of high quality, made from our CBD flower and with less than 0.3% THC (each European country has its own rules, and in some, such as the UK, hemp flower and hash are controlled even when they contain little THC).
Frequently asked questions about hash
Does CBD hash get you high?
No. CBD hash doesn’t get you high: the psychoactive effect of cannabis is caused by THC, and our hash contains less than 0.3%. CBD doesn’t produce the rush or the altered state of mind that THC does, just a pleasant feeling of physical relaxation. We explain it in depth in does CBD get you high?.
How can you tell if hash has been cut?
Be wary if it smells of plastic, rubber or chemicals, if you find plant matter or “filler” when you break it, or if it doesn’t melt when you hold a flame to it and leaves black ash. Pure hash bubbles, melts (full melt) and leaves light ash. The best guarantee is traceability and a lab report (COA).
What does hash smell like?
Like cannabis: an intense, natural aroma shaped by its terpenes (earthy, spicy or citrusy depending on the strain). A smell of plastic, rubber or solvent is a sign of poor quality or adulteration.
Is hash the same as resin or solid?
Yes. “Resin”, “solid” or “black” are colloquial names for the same product: pressed cannabis resin (in Spain it’s called “chocolate”, “costo”, “bellota” or “hueva”). The name changes, not the product.
Is hash a drug?
Traditional hash is: it concentrates THC, the psychoactive cannabinoid in cannabis, and in most European countries its sale and use are prohibited, with each country setting its own rules (in the UK, cannabis resin is a controlled Class B drug). CBD hash, made from industrial hemp, is a different matter: it has no psychoactive effects and is legal in many European countries, although in some, such as the UK, hemp flower and hash are controlled even when they contain little THC. If you have questions about the effects, this guide explains what hash does and how to spot a quality one.
Which hash is best to start with?
A medium-strength hash (such as pollen or dry sift) or, better still, CBD hash: it gives you all the aroma and relaxation without the psychoactivity of THC, ideal for everyday use.
How should you store hash?
In a cool, dry, dark place, in an airtight container. The ideal conditions (according to resin storage studies) are a stable temperature of between 4 and 15°C, relative humidity of 55–62%, total darkness (UV light degrades cannabinoids) and minimal contact with oxygen, ideally in an opaque glass jar. You’ll find the complete guide in how to store hash.
Does hash go off?
It doesn’t “go off” like food. In fact, storage studies spanning 4 years show that its main cannabinoids (CBD, CBDA, CBN) remain stable if it’s stored in controlled conditions; the aroma profile holds up with no noticeable degradation for around 12–18 months. Poorly stored, on the other hand, it quickly loses its aroma and nuances. And well-cured hash even improves for a while before it starts to degrade.
Does CBD hash show up on a drug test?
Tests detect THC, not CBD. Legal CBD hash contains only traces of THC, so with normal use it shouldn’t give a positive result, although very heavy use could leave detectable traces. We explain it in depth in whether CBD shows up on a drug test.
