How To Make Dry Ice Hash from Buds/Trim
Let’s get straight to it:
Making hash with dry ice is the easiest, fastest, and (more importantly) the most efficient means of extracting resin from your cannabis. In short, it’s our collective opinion (all 2 of us) that Dry Ice Hash is the best means of making hash…period!
Pretty big statement right? It’s even bigger when you consider how seriously people take hashish in today’s world!
Regardless, we’ll stand by that statement, and we’re confident that by the end of this article you’ll be itching to try making some dry ice hash. And we’re even more confident that once you do try making it, you won’t go back to any other method unless someone invents ‘Resin Teleportation™’.
We’ll make sure you get set up with the all the information you need, but first, let’s start things off with a picture of what we collected in under 15 minutes total!
What is Hashish (Hash)?
There’s a very popular book written in 1998 called Hashish!, and it tends to be treated as the end-all source of hash-related information. Here’s their definition of hashish:
“Hashish is a psychoactive drug prepared from the resin glands of the female (pistillate) Cannabis plant. […]The idea is to isolate (and thus concentrate) the THC-containing resin in order to make hashish.”
Simply put, hashish (which we’ll now just call hash), is just the isolated resin glands of the cannabis plant. Even simpler, hash is when you get the good sticky stuff from your cannabis all by itself. In a sense, hash is distilled cannabis!
Keep in mind that not all hash is the same. Some types of hash are made with solvents and can still contain said solvents when finished. BHO (Butane Hash Oil) has become very popular lately, but there have also been many cases where batches still contain significant levels of butane. That’s not to say that BHO always contains excess butane, just that it has the possibility. When hash or hash oil is made correctly, no trace of solvents should remain in the finished product.
That being said, using dry ice to extract resin will leave you with nothing but the resin itself because it is solventless. The CO2 is used to freeze off the resin, and then turns directly into gas. Your trim/bud never even gets wet! So you can make hash using this method without any additional concern other than careful handling and usage of the dry ice.
How is Dry Ice Hash different?
Here’s another pertinent piece of info from the book Hashish!,
“The process of hash-making can be divided into two parts – resin collection, and resin preparation.”
Although not all hash is the same, many types of hash are pretty darn close. Water hash – also called ice hash, bubble hash, gravity(Gumby) hash, and dry ice hash all produce forms of the same product: isolated resin glands. The difference between methods comes down to how the resin is taken off the plant, and how the hash comes out afterward.
Although many methods produce the same or a similar product, using dry ice has advantages in many areas that end up making it superior to other means of resin collection:
- It’s faster than other methods.
- You can finish making dry ice hash in about 1/25th of the total time it takes to make gravity hash! Although that example is extreme, it only takes a few minutes to make dry ice hash and is much faster than other methods.
- It’s insanely easy
- And that ease translates to it being quickly gratifying. You get top grade hash at the cost of shaking a bucket and a bag for a combined total of less than 15 minutes.
- There’s no moisture!
- That means the resin is ready as soon as it’s shaken loose!
So, back to that quote: “The process of hash-making can be divided into two parts – resin collection, and resin preparation.”
We know that collecting the resin is easy with this method, but what about preparation? Let’s go back to ‘Hashish!’ one more time to see why we need ‘resin preparation’:
“Primarily, [preparation] makes resin powder a more easily transported and marketed commodity. Secondly, since early-smokers lacked metal pipe screens that could contain raw resin powder during smoking, they made the loose powder into solid pieces, convenient for smoking.”
In short, preparation makes your hash easier to sell (which we STRONGLY RECOMMEND AGAINST) and easier to use (if you’re somehow reading this 40 years in the past). In other words, it’s completely unnecessary in our case! We’ll save time and effort by skipping any post-processing, and there are no real drawbacks!
Alright, enough background and quotes, let’s get started!
How to make Dry Ice Hash
We’ll be showing you how to make dry ice hash using hash bags of the following sizes: 73, 160, and 220. Here’s why we picked these sizes:
- 73 will catch nothing but resin in this case
- The good stuff – only actual trichomes with no vegetative matter at all! Golden colored and powerfully potent!
- 160 will catch mid grade with a bit more ‘green stuff’ in it
- Not as high quality as 73, but still great and definitely worth collecting!
- 220 catches pretty much everything else that’s not an actual leaf or stem
- This will have much more plant matter than the other two, but still much less than actual bud. This will smell like a concentrated form of your buds! I personally skip 220, but I would strongly suggest collecting 220 at least once before dismissing it, to see if it works for you!
If you’re going to do just one extraction, I personally would do the 120 (more pure) or 160 (more yield) Micron bags by themselves.
From left to right: 73 Micron, 160 Micron and 220 Micron Dry Ice Hash
Closeup of 73 Micron hash (most pure – just trichomes)
Closeup of 160 Micron Extract (more green matter, but still very high quality)
This is the 220 Micron dry ice hash
What You Need to Make Dry Ice Hash
- One sanitized 5-gallon bucket
- Cannabis trim/bud
- 3lbs of dry ice
- You may need more or less depending on how much bud/trim you use. 3lbs will cover a little to at least 6oz.
- Click here to go to a page that will let you search for dry ice in your area.
- Bubble bags/Hash Bags/Pollen Bags
- You’ll need 3 sizes for this tutorial: 73, 160, 220. These sizes are standard for this type of bag.
- Thick, insulating sturdy gloves
- No latex gloves, you need protection against -109.3°F cold. Snow gloves or BBQ gloves will do the trick.
- A scraping tool
- An unused paint scraper works great, but a credit card will do.
- A large, CLEAN, flat surface
- This will collect your hash, so make sure it’s clean!
- We used a large piece of new plexiglass (cheap at Home Depot) on a table.
Dry Ice Handling
Dry ice has some inherent risks due to its extremely low temperature and the fact that it sublimates (turns directly into a gas), but it’s actually very safe to use! Just check out these quick safety tips, exercise a little caution, and this will be a smooth and fun experience!
- Make sure you work in a well-ventilated area.
- Dry ice turns directly into CO2 gas. Although it’s a small amount of CO2 and doesn’t really pose a threat to you, it’s better to be safe than sorry!
- Don’t put dry ice in an airtight container.
- Dry ice turns into gas which will pressurize the container it’s in. Eventually, you’ll get a top shooting off unexpectedly, or worse, an exploding container!
- Don’t touch dry ice with your bare hands
- Dry ice measures -190.3°F at its warmest. It won’t kill you to grab it, but it’s no fun to get freezer burn either.
- Dispose of dry ice safely
- If you put dry ice down your sink or toilet, you could freeze your water pipes and end up with a massive repair bill. When you’re done with dry ice, just leave it in a well-ventilated area and it’ll simply turn into gas and leave.
Step-By-Step: How to Make Your Own Dry Ice Hash
Basically, you just shake a hash bag full of cannabis + dry ice and piles of resin will start raining out!
You’ve got your materials together and you know how to handle dry ice… let’s have some fun!
- Dump your (ground up) cannabis and dry ice into the 5-gallon bucket.
- Take the size 73 hash/bubble/pollen bag and fit it over the opening of the bucket, then shake and swirl the bucket around for 3-4 minutes. The process of shaking the cannabis around with dry ice freezes the resin so it starts breaking off from the cannabis and is more easily collected.
- Turn the bucket upside-down, emptying both the dry ice and cannabis into the hash bag, with the mesh side facing down.
- Shake the bag over a clean flat surface.This will cause resin to sift through the mesh part of the bag and fall out onto the surface like it’s raining resin! Keep shaking until you don’t see any resin falling out or you just can’t shake anymore 🙂
- Use your scraper to collect the newly fallen resin into a pile and transfer it into a container of your choice.
- Dump the cannabis and dry ice back into the bucket and repeat steps 2-5 with the size 160 pollen bag. Then again with the 220 bag.
You should now have 3 grades of your own solvent-free, homemade hash: 73 (pure resin), 160 (not as pure but still really good stuff), and 220 (it’s super fragrant and super free!). Enjoy!
FYI: Hash can be sprinkled over bud, vaporized, smoked directly with a screen, and mixed into joints. If you’re unfamiliar with hash, starting slowly will help ensure you don’t use too much – this stuff is powerful!
How To Make Dry Ice Hash from Buds/Trim Let’s get straight to it: Making hash with dry ice is the easiest, fastest, and (more importantly) the most efficient means of extracting resin from
Dry Ice Curing
Does anyone have any experiance with this method.
Here is what i have read on it:
Many homegrowers have written to us that the dry-ice cure increases the potency of marijuana considerably, and we would be remiss not to mention it.
Dry ice is frozen carbon dioxide. When it melts (sublimates), it turns from a solid directly into a gas. This gas absorbs some moisture from the frozen marijuana and partially dries it.
There are many variations of the dry-ice method. Fresh or partially dried material is usually used, although some enthusiasts claim that the cure also works with dried material. The marijuana is placed in a coffee can or similar container with a lid, along with at least an equal volume of dry ice. Puncture the lid so that the gas can escape as it evaporates. Place the can in a freezer to prolong the evaporation process. When the dry ice is gone, the grass is dried, but still moist.
Some growers claim that simply freezing the grass increases potency. They often freeze fan leaves or other less-potent material for a couple of months before smoking it. This is said to work only with fresh (wet or dried) grass.
honestly it sounds like bs to me too but its peaked my curiousity so HONEST feedback is what u will get trust me if it sucks i will def let everyone know so no one else has to waste there time/bud.
Im goin to give it a shot on a really small scale maybe an oz or 2 the most and compare it to jar curing. i have to say it would be reallly k0ol if it works though lol
Quick google search and a little cut and paste save my fingers. LOL
DRY ICE CURE (FREEZER DRYING) ALL U NEED TO KNOW!!
– What is Dry Ice? “Dry Ice” is frozen Carbon Dioxide. CO2 will change from its solid, frozen state to its gaseous state without passing through a liquid state – hence it’s name ‘dry ice’. This process of solid changing to gas is known as sublimation. What is Sublimation? Sublimation is a simple process which depends on the fact that the surface of a frozen solid is actually quite active at the molecular level. In the case of water ice, water molecules are constantly leaving and binding to the frozen surface. In a moist atmosphere, more water molecules bind to the surface than leave, and ice grows on the surface (e.g frost inside your freezer). In a dry atmosphere however, more water molecules leave the frozen surface than adhere, so the solid dries out. The same process occurs with Dry Ice. As there is a fairly low CO2 content in air, the dry ice sublimes away completely, leaving no residue or liquid – hence its name. What is Freeze Drying? Freeze drying (scientific name: Lyophilization) depends upon the process of sublimation (explained below), and on the fact that like CO2, frozen water at low temperature will go through the process of sublimation under the right conditions. Dry ice has a very low water content, as it is made up of almost pure CO2. In theory it IS pure, but even from a lab suppliers, it will have a small amount of impurities – these do not matter for our purposes. In effect the dry ice vapour has near zero relative humidity. Now: (this is the important bit) When material containing water is placed into this almost zero humidity environment, the water molecules are drawn out of the material and into the CO2, raising the relative humidity of the CO2 and lowering the water content of the material. If the CO2 around the material is steadily replenished then the process will continue until all moisture has been removed from the material. All this happens at low temperatures, below the freezing point of water, which means that the material is preserved in a totally ‘fresh’ state. How Do I Freeze Dry Grass? Use a container (I use a Tupperware box) that is twice as big as the volume of grass you wish to dry. Make a few small holes in the lid, to allow the gas to escape. Put equal volumes of bud and dry ice inside, loosely packed, with the dry ice underneath the bud. Put the lid on and make sure it is properly sealed so that the only way for gas to escape is through the holes in the lid. Put the box into a freezer, lid upwards. This is to keep the material as cold as possible, prolonging the sublimation process for as long as possible. The dry ice will begin to sublime pushing all air out of the box and surrounding your buds with bone dry co2. The totally dry atmosphere will begin drawing water molecules out of the plant material. Check the tub after 24 hours and then every 24 hours until the dry ice has all gone. When the ice is all gone -the buds should be completely dry and smokeable. If you find that they are not quite dry then put some more dry ice into the box, place the lot back in the freezer and wait until they are done. Can I use a fridge? You could use a fridge instead of a freezer, but the dry ice would evaporate very quickly so you’d need a lot more of it to dry the buds, hence the expense would rise rapidly. Better would be to use a ‘cool box’ – one of the plastic insulated boxes for food storage when camping. Again – make sure that there are holes so that the gas can escape. Do I need to prepare the buds? It’s better to partially dry the buds so that they are nearly dry, then finish them off with dry ice. If you use fresh, wet grass then you can expect the process to take much longer and to use more dry ice, pushing the cost up. I find that using partially dry buds in a freezer the dry ice has gone after about 48 hrs. What I do is give them a week of slow dry, then manicure, THEN freeze dry them. What are the advantages? The advantages of this method are increased potency and a ‘fresher’ taste. As the material is preserved in a totally ‘fresh’ state, the THC glands suffer as little degredation from heat, light and air as is possible. No other drying process preserves the resin glands is such a fresh state as can be achieved with freeze drying. Why should I freeze dry? Freeze drying is good if you plan to freeze your bud anyway. If you don’t want to keep it in the freezer then there isn’t a lot to be gained by using the technique, as the ‘fresh’ thc will rapidly degrade as usual once outside the freezer. Where Can I get Dry Ice? You can get dry ice from most lab suppliers (expensive) but many industrial ice houses or ice cream suppliers sell it for considerably less (preferred option) Just try the yellow pages. My Opinion Based on Experience To be honest, In my experience the dry ice cure is a lot of trouble for little benefit, as the final taste isn’t as good as you can get by slow drying and glass jar curing. Generally it’s greener tasting and somewhat ‘minty’ due to the remaining chlorophyll. Strangely enough, some people like this minty taste and associate it with strength. (weird, I know – but they do.) Does it really increase potency? I have tried comparison by using a control sample, and freeze drying definitely seems to give you a slightly ‘higher’ hit with a ‘mintier’ taste than the jar cure, but the overall strength didn’t seem hugely different. It’s a connoisseur smoke, perhaps. In a blind test at a party with about thirty people involved it came out about evenly split as to which was the strongest, but that was a subjective test, and was only conducted in a very stoned manner! According to The Frank & Rosenthal Guide, anecdotal evidence suggests that freezing improves potency, which is why I got into the process in the first place. I’m not convinced either way, but it was a fun technique to play with for a while.
In essence. Not worth it. It drys fresh buds to fast and leaves alot of chlorophyl in the plant matter. But still interesting.
Does anyone have any experiance with this method??? Here is what i have read on it: Dry Ice Many homegrowers have written to us that the dry-ice…