Extracting With Oils

Oil and fat extraction is a methodSkunk PharmResearch will be further developing, so watch this thread.

Cannabinoids and the other terpenes in cannabis, are readily dissolvable in fats and oils, so fats and oils may be used for both extraction and as a menstruum.

When I say fats and oils, I am referring to the vegetable and nut oils, as well as clarified butter.  Oils tasty enough that may be ingested with a dropper, mixed with drinks, or used in medibles.

Water solubility varies, but one of the advantages of using oil for extractions, is that they are for the most part non soluble in water, so they don’t extract excessive water soluble constitutes, like chlorophyll.

There are practical limits to the potency that can be achieved extracting with oil, because as the oil becomes saturated with cannabis terpenes, they become less concentrated and their solvent action slows down to a crawl, before stopping altogether.

Potency can be ratcheted up somewhat through using the same oil to do multiple extractions of fresh material, but even that has limitations.

A key factor in achieving maximum removal rates and efficiency, is keeping the boundary layer between the un-dissolved resins and the unsaturated oils used for extraction regularly removed.  The method that we used in this experiment, was simple, but through periodic stirring.

Sublingual oil tinctures: 

Aside for their useful role in extraction, oils and fats may be mixed at any ratios with cannabis terpenes, if you are just mixing them together as oils.  Some of them are damn tasty even taken from a dropper, though as the concentration increases, the flavor becomes less fetching and it leaves more of a lingering aftertaste.

Choose an Oil:

We haven’t tried them all, but we have tried Almond, Avocado, Butter, Canola, Coconut oil, Grape Seed oil, Hemp seed oil, Olive, Pecan, Sesame, and Walnut oils.  They all work well, so they are a good place to start, if you are new to extraction.

Here is a good link for determining the smoke points of the various oils:

http://en.wikipedia.org/wiki/Smoke_point

Preparing the material:

We first start by drying the trim.  For the most floral flavor and the highest amount of lighter terpenes, material that is hung until it reaches the small stem snap stage is best for our purposes.

In our experience, for best flavor and taste, freshest material works best.  Older cured material loses the nuances of the floral undertones and just tastes like hash.

That means that the degree of drying and curing is also critical, if your goal is to maintain maximum terpene content.  Not that hash has a bad flavor, but it should be a conscious choice.

Choosing material:

Oil from buds is tastier than oil from even sugar trim, because most of the terpenes are produced by the buds, and that is where they are the most plentiful.  Tasty is usually not a word used to describe oil from fan leaves or stems, though effective may be.

The material that we used in this experiment, was donated sweet trim from Chocolate and was well dried and cured.

Oils used in this experiment:

We used Ghee (clarified butter), Coconut oil, Grape Seed oil, and Olive oil for the run, because they are commonly available and inexpensive.

Making Ghee:

To make the Ghee, we melted unsalted butter and cooked it at low temperature, until the butter fats separated from the Ghee.  We then skimmed off the floating butter fats, and sucked off the Ghee, using a turkey baster, leaving the heavier butter fats in the bottom of the pot.

Most recipes for extraction with butter call for boiling the material in water and butter, but we studiously avoid adding water and our Ghee extraction has only the lightest tinge of green and no chlorophyll flavor.

Here are the three extractions taken out of the refrigerator, where they were stored between cooking and actual pressing.  Note that the butter, olive oil, and the coconut extractions have a slightest green tinge, yet none actually had a chlorophyll flavor.

In this experiment, we didn’t attempt to reach maximum saturation, but to determine what was reasonable to expect from a single batch.  To reach maximum saturation, we would have simply processed more than one batch of fresh material through the oil.

What we did, was fill four jars 3/4 full of the trim and then added enough oil to cover it, stirred it thoroughly, and then added another inch of oil.

We then lightly capped the jars and set them in pot of hot water and simmered it on low for six hours, uncapping and stirring thoroughly a couple of times an hour.

At the end of six hours, we removed the jars from the hot water and set them aside to cool.  The next day, we cooked them two more hours, stirring regularly, and the third day we cooked them another six hours, for 14 hours total, with three heat cycles.

Lightly capping means snug enough to allow some pressure to build, but loose enough to vent off anything excessive.  Since we used cured material and didn’t add water, there were little in the way of volatiles to boil off and produce pressure.

I left the lid off the boiling pot, so as to not force steam into the jar head space.

For pressing, we warmed the oils and ghee up by placing them in boiling water, this time with the lids on tight and the lid on the pot.

Next we cut up some rags from some surplus drape material, with approximately a 160/200 thread count,  and draped it over a restaurant sized potato ricer that we scored at Hongs Restaurant Supply in Portland.  By pressing it down into the potato ricer, it formed a pocket that holds approximately a quart of plant material.

Folding the cloth over and pressing it, produced  a pristine clear oil, which was tasty enough to dropper.

 The most flavorful, was the ghee, and possibly the fastest to uptake and produce an effect.  Alas, after just testing just enough of each of them to determine their flavors, I needed a nap, so the next phase of this project, is to titrate for potency and effect, as well as flavor, using volunteer test panels.

We also will experiment with different ways to use the oils in medibles, so stay tuned!

226 responses to this post.

  1. If there’s something I’ve ever noticed it’s when picking your oil to extract be sure you don’t use a volatile one now you’re stepping into the dangerous boundries you might as well just use alcohol or some other flammable material. what happens to the compounds as you extract with these oils? 15 years of research guys and theres one answer now. We supply labs so no worries on the high prices. Joe Kyser has done it guys. Been there done that 15 years ago. Thats all old techniques dating as far back as 40 years ago. The old heads will concur. I had a meeting with one from the valley last night. He just outlined to me how cutting edge i am and how these methods are now ancient. Leta go guys get with the program. Old and tested lets introduce the new way to extract nontoxicly with organic compounds

    Reply

    • Joe, you are dancing a fine line with our spam rules. Instead of telling us the other oils are bad and yours are good, please share with us what is in your solvent,as well as the details behind why it is so good.

      GW

      Reply

  2. From canning jams, tomatoes, etc. for a long time I can say I’ve never seen a Ball Jar break. 45 years ago, we’d fill them, seal them, cover them in water and boil them for a while to vaccuum seal. No probs. Worry about other things, like having a towel in an oven….😉

    Reply

  3. Lisa two things, fist to get the the-a or any acid form, just eat the bud/flower raw. make a pesto or whatever. That will go straight to the belly and be where it needs to be. the the-a is especially good for gut inflammation. for the bleed use bone broth and find a chinese herbalist. there are lots of herbs to help with that. charred ai ye helps a lot and yo can get it in china town. more specific questions darby at cgca dot us

    Reply

    • This makes it sound like you believe I have a lot of access to fresh leaf/flower? I have but one plant (clone) going, just 12″ tall, at the moment. Are you indeed referring to green plant material, or dried leaf & flower? And is any bunch of strains known for TCHa and CBDa? I got the impression just hemp has plenty…? Is that accurate?

      Reply

  4. I’m a really good cook, former math/sci geek, suffering with GI bleeding given to me by NSAIDs (it actually happens a lot). Been treated for 2 months with no change by BigPharma corticosteroids, now they want to put me on auto-immune drugs… to treat an Rx-induced bleed.
    “Not so fast,” say I. If anyone is isolating CBDa, CBG CBC, please let me know and I’ll gladly subsidize.
    If however, all I can do is cook it myself, I have a crock pot, a pressure cooker, a potato ricer and some wicked knife skills. My only relatable kitchen experience is in making flavored syrups (ginger is my fave, but I do mint and lavendar), jams and flavored vodkas. I’m getting some relief from a whole bottle of CBD oil (Trishula brand) taken a dropperful at a time over about 48 hrs (approx 15 mg CBD), every time I thought of it, but it’s marked only CBD, not CBDa. So there could be even more benefit to other isolates, hm?
    All suggestions appreciated. If you’re in LA I’ll cook you dinner. TIA

    Reply

  5. Posted by Cutieonli on August 19, 2016 at 7:57 PM

    I don’t have plants, is there a way to make the butter using RSO ?
    Ty I’m new here and learning so much

    Reply

  6. Hi, I’ve already produced a few batches of oil using a couple of different methods, the one described in this article is preferable. I’ll be using kief to produce my next few batches of oil. Is the same decarboxilation time/temperature required, if at all?
    Thanks for your ongoing open research and assistance!

    Reply

  7. Posted by Ira on July 31, 2016 at 5:37 PM

    This process seems so cumbersome. Isn’t there a more direct route to achieve similar results?

    Reply

  8. Posted by SdNative79 on May 14, 2016 at 9:57 PM

    All I want to know is what is the best temperature to cook any of these oils at and for how long. I’ve heard to cook between 200 and 250. I also read 9n this website that CBD CBN and THC all melt at just under 180 degrees so 180 is fine for 12 hours. What are your opinions? I hope to hear directly from Skunk Pharm Research but any input is appreciated.

    Reply

  9. Posted by Christopher A Siweck on March 26, 2016 at 11:08 PM

    Why take something so simple and try to make it complicated attaining much higher results with a lot less effort. if you would do more research it would benefit you greatly mr. Sarcastic know-it-all professional expert non- novice serious competition

    Reply

  10. I’m so happy to have found this site. Thank you sooo much for all the excellent info you are providing! I’ve been researching CBD as a medical aid a lot lately and your site if the best I’ve come across. I’ve just started on my first oil extraction, using your method, with coconut oil. Wish me luck! xx Tania xx

    Reply

  11. Posted by ChristmasCarla on January 18, 2016 at 9:56 AM

    I’m reading all the fine ways to extract cannabis into oils, and I’ve not seen any information on using various strains for their different purposes. For instance, high-Sativa strains will be energizing and high-Indica strains will be relaxing and sleep-inducing. Also, Sativa strains, in overdose, produce anxiety and paranoia and insomnia, whereas overdosing on Indica strains just puts you to sleep.

    I do my extracts into olive oil or hemp oil — olive oil for everyday use of your favorite strains (lower costs), and hemp oil for the high-CBD medicinal strains, in the assumption that the hemp oil contains some of the beneficial medicinal cannabinoids. I work as a trimmer, and have consistent availability of certain strains. I keep the sugar trim from each strain and dry it separately, then pack my crock pot (takes about 5 oz of dry trim, no shade leaves) and cover with oil (approx. 2-1/2 liters). Olive oil smokes at 185 degrees, and my crockpot stays at 175 on low setting (Use a meat or candy thermometer to check.). I let it cook for at least a day, then strain and bottle. My oils dose at 1/2 to 1-1/2 teaspoonsful, depending on one’s tolerance, and effects last up to 12 hours for body healing. Psychoactive effects will manifest about an hour after ingestion and last another hour or more, can be minimized with smaller dosage and of course increased with a higher dose.

    I’ve found the following reaction to certain strains, and I note that everyone’s reaction is unique to themselves…
    OGs: everyday use
    For me OG#5 is pain-relieving and mood-stabilizing. One teaspoonful in the morning gives me pain relief for 12 hours, a little head high mid-morning, and a calm attitude all day. Skywalker OG throws me off-balance and is a little too edgy for me, but it seems to work well for men, for some reason.
    XJ-13, a Jack Herer strain, works well for a busy work day, doesn’t make your head fuzzy, and has a high CBD content.
    Silver Haze, lovely stuff that’s been around for decades, is one of the best sleep-inducers, especially if your trim has been around a long time too and has naturally decarboxylated.
    Lamb’s Bread, a pure Sativa from Jamaica, defies the usual Sativa profile and induces sleep readily in small doses, but if you overdose, it does the Sativa thing and gets you anxious.
    Cherry Pie, probably Sativa-dominant, is one I use for real head-tripping, as it stimulates creative thinking for me. I nickname it CP, for Clear Perception and also for Certainly makes you P a lot! Diuretic, anyone?

    Anyway, you get the idea, and I hope this information gives you some directions to go to find the cannabis strain that works best for you.

    Reply

    • Posted by Jerry on January 26, 2016 at 1:08 PM

      Did you need to decarboxolate the trim and bud before your all-day crockpot cook?

      Reply

      • Posted by FishmanK on February 1, 2016 at 12:26 AM

        ChristmasCarla doesnt do any heating besides the crock extraction of 24hrs or so @ around 170F
        I happen to know though, that she sorta has a back-log of material to process and prefers to use a bit older sugar trim that has already started decarboxylating naturally with the passage of time.
        I can attest personally to the effectiveness of her oils and feel she doesn’t “need to” decarboxylate more.

        Reply

        • Posted by Junkyard McGraw on July 29, 2016 at 10:00 AM

          Do you have an idea of the time needed to complete a natural decarb? I’m curious if this might bring out the best in the medicine..

          Reply

  12. I have 2 mason jars that are filled (3/4 full) with some shake and some bud with ever clear (ethanol 95%). I decarboxilated the greens before pouring in the ever clear.
    I am wondering if I use a seperatory funnel to pour the ever clear into grape seed oil
    and then sperate the two layers, if (1)the THC will go into the oil? , (2) there will be an equilibrium with some THC in both the ever clear and some in the oil.
    I have kept the jars in the freezer for a week with daily removal and shaking and then putting it back in the freezer.
    My real concern is that the everclear “burns” just about any tissue it is put on.
    hint: do not try ever clear suppositories!

    Reply

  13. Posted by Denny Okie on December 23, 2015 at 5:39 PM

    Where can i buy hemp, to make my own cbd oil?

    Reply

  14. Posted by Sally Samsara on December 23, 2015 at 11:44 AM

    Glad to find this site.
    For medicinal reasons I want to make CBD paste or oil.
    Stoned chef, would you sell some of yours?
    Are folks using cannabis or hemp as their starting product?
    If using hemp, can one buy 1/2 pound somewhere legally?
    Thanks!

    Reply

    • Hi Sally. I’ve just started making my first ever CBD oil, also for medicinal reasons, I have auto-immune rheumatoid arthritis. I’m using the oil extraction method, with coconut oil. It’s simmering away on my cooker atm on it’s first hour 🙂 I found a great supplier on Amazon, they are called CBD-HEMP. I buy their cbd female hemp bud. The new batch they’ve just got in is way higher in CBD content than any others I’ve seen – 10.8 %. It’s totally legal as it’s not psychoactive and is usually sold as hemp tea. I bought 100grams for £38🙂 Hope this helps xx Tania xx

      Reply

      • Posted by Carey Tucker on March 27, 2016 at 3:01 PM

        Hey I’m trying to find the CBD-Hemp on amazon, but it’s not showing up. could you post a link. also… i wonder what state or country are you in? might just be illegal where i am

        Reply

  15. Posted by Jen on December 8, 2015 at 7:03 PM

    HI there, I am making CBD oil right now. I did 20g of CBD bud to 1 1/4 cup coconut oil.
    What I would like to know is how much to take? Does anybody know? We were using high quality CBD oil from a great company and we were taking 25mg of that a day. We are trying our best to replicate that, but we know that their CBD oil was extracted by CO2.

    Reply

  16. Posted by lifelearningtoday on November 29, 2015 at 7:10 AM

    I recently read that it’s important to pasteurized
    To eliminate mold and/or bacteria when doing an oil extraction. Is that true?
    Thx

    Reply

    • Posted by Sean on December 13, 2015 at 5:14 PM

      No. You’re adding raw plant material which contains water (providing bacteria with life) to an oil, so there’s already the potential for food-borne illness if you leave it out at room temperature. Make your extraction, cool it in an ice-bath (look up ServSafe two-stage cooling for the proper procedure) and then store it in the fridge, or even better in the freezer (which maintains the properties of the oil, prevents rancidity, and nearly eliminates risk of food-borne illness).

      Reply

  17. Posted by flamez on November 2, 2015 at 12:07 AM

    so what sort of temps are used here, and does it fully decarb during the process? or are we supposed to decarb before/after sorry i’m a bit confused.

    Reply

    • Posted by Devon on November 7, 2015 at 1:41 PM

      You could decard first, but the extraction process itself will decarb the material sufficiently as well any baking that would happen when making edibles. Decarbing before all of that might be a little to much heating, actually.

      Reply

      • No sir. That is absolutely wrong. You MUST decarb to activate the inactive THC and even turn some of it to the medicinal CBD. If one were to decarb at the right temp. for the right amount of time one could turn almost all of the THC to CBD/CBN! I get my canna-coconut oil tested regularly at SDPharmLabs and am telling you this from over 2 years of getting my oils tested.

        Reply

  18. Posted by Gav on October 20, 2015 at 11:47 AM

    Nice article !
    Thanks

    Reply

  19. Posted by Darby on September 14, 2015 at 7:42 AM

    Yes

    Reply

  20. Posted by Franky on September 13, 2015 at 11:30 PM

    Hi,

    I’m wondering if I can do the extraction then decarboxylate my oil. Thank you

    Reply

  21. Posted by Marc on September 5, 2015 at 3:02 AM

    Hi
    My wife has Ms with lots of pain and other problems, we made a batch of oil using cbd critical mass and extracted with isopropyl alcohol (we followed the instructions for Rick Simpson oil)
    The problem is, the finished oil is now so pure and strong that even a tiny pin head drop sends my wife into crazy, whacky land, its way to trippy to use and lead a normal existence,
    Also we have some dried bud left that we were advised to heat and this too is just as strong, so of no use.
    We were wondering if anyone knows of a way to make it less potent! We assume the THC has been heated and activated very well, can we destroy this to leave CBD or will this also be destroyed in the process?

    Ta 

    Reply

    • Posted by Darby on September 5, 2015 at 11:27 AM

      Assuming you are making oil that is 60% thc, then even one drop has 30mg in it. If it has all been decarboxylated then it will pretty much all pass into the brain. Unless you are a long term heavy user this is way to much, beyond trippy for most. Your choices are dilution or distance or a combination. Dilution means for 1 part rso 2 parts oil of your choice of other oil. This will yield 10mg per drop, a far more pleasant experience. If you take this dose under the tongue every 4-6 hours you will develop tolerance. If this is still too strong dilute in half a small portion of it and follow the above dosing till she is tolerant.
      Distance means rectal suppository or topical foot application. There will be some dosage that gets her high but it should be quite a bit higher allowing much greater dosing. Both require some dilution in fat to promote absorbtion.
      In the future you want non-decarboxylated thc also known as thc-a. This will not get her high and will focus the treatment in her body where the inflamation is. If you have further questions darby at cgca dot us

      Reply

    • Posted by Gav on October 20, 2015 at 11:51 AM

      In my experience you want the THC and cbd in order to treat any ailments

      Try reducing your oil in MCT oil
      It’s a good way to treat h out your oil and make it last but will also reduce the high somewhat

      Reply

  22. Posted by Christa on August 7, 2015 at 10:03 AM

    Hi, do you know what the maximum saturation is for coconut oil? And how many times you can process new batches through the oil. I have been using the magic butter machine and have reprocessed only 2 times so far using 3 ounces of shake to 1 cup of coconut oil. And I am not sure if I am just wasting the cannabis, or if I could get even more out of it.
    Thanks for any help in advance.

    Reply

  23. Posted by researchlab on July 8, 2015 at 10:18 AM

    If you take dried coconut, not from a bag it has additives. Grind coconut and material to a fine powder. Put this in your butane extraction device. This produces an edible that will stay in a liquid form. The process binds the oils together and makes a potent cocktail. Try it you will like it.

    Reply

    • Posted by Shane on July 21, 2015 at 9:15 PM

      I use straight organic honey sometimes heritage stone brand glycerin food safe always ad honey I don’t know if it’s the enzymes in the honey or what it works well

      Reply

    • Posted by John Wheelock on December 4, 2016 at 9:03 AM

      I have my co2 extracted oil,and I have MCT OIL, CAN I MIX THEM WITH OUT HEAT FOR TINCTURE, OR HEAT TO MIX AND WHAT SHOULD THE RATIO BE FOR 1OZ.OF MCT OIL TO PURE CO2

      Reply

  24. Posted by Mike on July 5, 2015 at 12:15 PM

    Cannabinoids have a solubility of 500 mg/ml or greater in light mineral oil. I’d guess the solubility would be similar in nut oils.

    Reply

    • Posted by Darby on November 5, 2015 at 8:32 AM

      Mike, do you have a source for this? It sounds right I am always trying to find capacity research as I change formulations though. Thanks.

      Reply

  25. Posted by jim on June 22, 2015 at 11:10 PM

    Check out the Magical butter machine! its so easy, its seriously set it and forget it!
    THIS THING IS THE BEST, made 80 strong ass cookies off 1 oz trim

    Here’s the link they sent me so my buds could get $25 off
    http://magicalbutter.refr.cc/JFGDNKB

    This thing has by far been my best purchase of the year

    Reply

    • I now have two of those machines and love’em! I grind up my sweet leaf or bud with a coffee grinder – to a fine powder. Add in two cups of coconut oil, 1-2 sticks of butter, soy lecithin .. set it and forget it! Afterwards, I pour the entire contents into a big glass bowl and refridgerate. The cold seperates the ‘sludge’ that falls to the bottom and the top is a pale, creamy green cannabutter! I use it to make all kinds of baked edibles. Easy, no muss, no mess, no fuss! Turns out GREAT everytime! And, it self-cleans.

      Reply

  26. Posted by Anthony on June 15, 2015 at 11:34 AM

    Have you come to any conclusion as to what might be the best oil to use, or is a combination best? Maybe it would be best to use several different oils independently because they each have different pros/cons? There is a lot of differing views on this, I’m just wondering if you have any insight on the subject… Thanks or all you do! Have a great one!

    Reply

  27. Posted by Dave on April 17, 2015 at 2:44 PM

    Hi skunkpharm, i was wondering if it would be possible to furthur speed up said extraction by sealing the oil and plant material into a mason jar, then placing all those jars into a pressure cooker and blasting it for 30-45 min. Or would the heat be to excessive and cause degredation? It seems like if the jar was fully sealed and heated then cooled before opening all the terpenes would remain inside.

    Reply

    • Posted by Dave Trowbridge on April 17, 2015 at 2:51 PM

      That will degrade virtually all of the THC into CBD. Great if you want the result for pain medication; not so great if you want psychoactive activity.

      Reply

      • Posted by Diamond on May 25, 2015 at 11:46 AM

        Maybe you can help me out. I’m looking for something to help with pain….smoking helps, but I need something more with ‘body high’ effects. My stomach is paralyzed, so eating causes the pain…I got some suckers from Colorado, but they didn’t seem to help much…so I’m trying to figure out the best way to make my own for what’s need. I also need the ‘munchie’ effect lol….

        Reply

        • Posted by Lynn on September 3, 2015 at 3:36 PM

          If I were you I would do edibles. When I was diagnosed with Breast cancer I started flooding my body with edibles. When they did the surgery no sign of the cancer was present.

          Reply

        • Posted by Lynn on September 3, 2015 at 3:39 PM

          LOL I meant to say drinkables for you, not edibles of course. Unless you can eat chocolate without too much pain.

          Reply

      • Posted by Senor_destructo on June 9, 2015 at 7:00 AM

        THC doesn’t degrade to CBD, it degrades to CBN.

        Reply

        • CBN is a good thing!. But I don’t think THC degrades ‘into’ that.

          Reply

          • Posted by Darby on November 5, 2015 at 8:34 AM

            THC does indeed oxidize into CBN. I must say while I have not verified that personally with an electron microscope or a hplc analysis it is what is listed in every reference I have found via google and print.🙂

    • You really aren’t as interested in more heat, as keeping the boundary layers removed to keep the desolution going at maximum efficiency.

      As noted, excessive heat destroys some terpenes, and converts others to something else, like a diterpene THC to CBN.

      Reply

      • Posted by Momo on August 4, 2015 at 12:04 AM

        If I’m extracting a small amount (3.5 grams) would it be necessary to cook for as long as you did? Maybe 2 hours maximum? ‘

        Reply

    • Posted by 1kristin@gmail.com on November 26, 2015 at 12:15 PM

      I am using a Pressure Cooker XL. I put melted butter and cannabis in jars (1oz per lb of butter) and close to just less than finger tight. I put it on 10 minutes. It takes appx 15 minutes to get to pressure. I will post s soon as i have it tested. I am getting the best butter and/or c oil ever. It does retain floral notes and smells contrary to what people are saying.

      Reply

      • I was wondering why no one was using a pressure cooker?! Seems obvious. Even, to process just the plant material + oil… it’d be better than leaving it all day in a crock pot or a stove… wouldn’t it? Can one of the experienced ppl chime in here?

        Reply

  28. Skunk Pharm Research, do i Have to put the butter and bud in a mason jar or could i leave it in a Crock Pot and just put that back and forth in cold and heat until I Am done and then strain it into a jar.?! i do Not want to mess it up, it is for my Mom who was just diagnosed with MS and has never really taken cannabis besides cbd oil.

    Reply

    • Posted by Dave Trowbridge on April 17, 2015 at 2:53 PM

      A crock pot could work OK, but it’s hard to control the temperature as easily as you can with a water or oil bath. Perhaps if you could find a dimmer of some sort that could handle the wattage of the crockpot and combined that with a thermometer it would be enough.

      Reply

    • A crock pot works fine!

      Reply

  29. Given the decarboxylation graph elsewhere on your site, I wonder about the length and temperature of your processing here. I have just started extracting with clarified butter with some success, and have become interested in ways to modify the kinetics of decarboxylation to get away from the urgency of the curves in that graph. It has been suggested to me that using baking ammonia [(NH4)2CO3] to deprotonate the THC-A would accelerate decarboxylation at lower temperatures, perhaps as low as 50-60 C (baking ammonia breaks down about 59 C), where, one assumes, the further transformation of THC into CBD and CBN would be much slower and one would lose fewer terpenes. I think, however, you’d need water in the oil to do that, so ordinary butter (a fairly stable emulsion of butterfat and water) actually might work better.

    BTW, fine-mesh plastic paint-straining bags seem to work quite well for filtering and are easily cleaned.

    Reply

  30. I have been extracting using a portable roaster now for almost two weeks. I had the temperature at 150 degrees F constantly for the time in the water bath. I did put a towel on the bottom to avoid the glass jars from getting too hot. But my interest is in the aroma of the end product. I did look at your QWET process as well, but have many questions regarding that process also. I am in the testing stage and need a little sound advice. I am making the oils with olive oil and mostly dried herbs. But I have also been doing citrus peels. I realize that this is a “pot” website, but frankly the information I have found on the web hasn’t been very helpful. Anyway, can I make an absolute or even a concrete using the oil method? And in your opinion, since citrus peels are full of water, what would you reccommend using as an extraction method for citrus? If you are willing to answer my questions, I may have some others to ask you in the future. Thanks in advance.

    Reply

  31. Is there anyway to separate terpenes/thc/cbd from fat/oil? Is there a substance they are more soluble in?

    Reply

  32. Posted by oilymaker on December 6, 2014 at 5:10 PM

    Awesome. Than you guys🙂 So, why 3 separate cooking sessions?

    Reply

    • The theory behind it, is that the resin breaks down faster during heating and cooling, than upon steady heating, and allows you to extract using less heat.

      Reply

      • Ah! Yes, I’ve experienced this first hand, changes in potency and/or extraction requiring more than one heating (& therefore cooling) period to make happen. Didn’t know if it was my imagination or not. This info explains the phenomenon well, so it was real after all.

        Reply

  33. We use double boilers or crock
    pots. It looks like you are at risk of your mason jars breaking if they are in contact with the bottom of your cooking pots. I would place the metal rings of the lids under the jars so they are not in direct contact.

    Reply

  34. Posted by Ryan on November 22, 2014 at 11:19 AM

    Thanks for the info! I’m trying your method and I was wondering if you had a rough estimate as to how many times I can run the same oil through fresh material to reach maximum saturation? (Using mid-grade trim/flower)

    Reply

  35. Posted by Sanka on October 29, 2014 at 3:43 PM

    will these oil extracts have work topically as well as orally or only orally?

    Reply

  36. Posted by Tim on October 25, 2014 at 9:17 AM

    I would not use ‘some rags from some surplus drape material’ instead use either cheaper food grade muslin or cheese cloth so that you do not have to worry about chemical leaching from the material during the straining process

    Reply

  37. is there a rule of thumb as to how much THC and CBD are left after using CO2 extraction? For example, if I wanted to process an ounce of low THC plant product at less than 1% THC and over 10% CBD, I would yield anywhere from 8-12% of that ounce in grams of an oil product derivative, right? Now, would that oil product have the same 1% THC and 10%+ CBD or would the levels of THC / CBD increase?

    Reply

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