I recently started trying out an alcohol extraction method, not being ballsy enough for the A/B extraction, and thought I'd share the 'technique' (if you can call it that) that I finally came up with after several wasteful attempts. About halfway through making the stuff (I did several batches), I ran out of funds (i'm a college student) and had to improvise a bit, so there are better/more obvious and easier ways and materials to accomplish some of the steps here.
What you need:
-pedro/peruvian torch of some quantity, dried and powdered.
-91% isopropyl alchohol (you can use grain alcohol, everclear etc., but it gets to be VERY VERY expensive - you use quite a bit of alcohol. using isopropyl only means you need to be very thorough with the evaporation)
-Glass jars (I used 1 quart mason jars - I will use twice this size next time, but they got the job done)
-Fairly large glass baking pan (pyrex)
What you do:
1. Weigh out some quantity of powder and put it into one of the glass jars. If you are using quart jars like I did, 300 grams of powder is about the limit. You need room to add enough alcohol to make it liquidy and keep unmaneagable clumps from forming on the bottom that refuse to mix when you shake the jar.
2. Pour enough alcohol into the jar to make a soup. Seal the jar. Let it sit for a bit and then give it a shake and turn it upside down. If a bunch of powder is clumping on the bottom and won't mix even with vigorous shaking then you need more alcohol.
3. Let the jar sit for a day or two, shaking it at least 5 times per 24 hours. The more shaking the better.
4. Open it up and add fresh alcohol, as much as you put in the first time (however much it took to make it adequately soupy)
5. Let the jar sit for a day, shaking all the while
6. Add more fresh alcohol
7. Repeat this process, halfing the amount of time in between adding alcohol, until the jar is nearly full.
8. Let the jar sit an hour or so until the dark liquid has significantly separated from the powder on the bottom.
9. Using the turkey baster, suck out the dark liquid and put it in another clean jar. You want to get as much liquid out without sucking up solid matter. This can be difficult and just takes some practice.
10. Repeat steps 2->9. You'll notice the liquid that separates start to get clearer. Once the separated liquid is fairly transparent (looking like yellowish-green tinted water) you're pretty much done. You can continue adding more alcohol, shaking and sucking, but I'm guessing gains are minimal at this point. Optionally you can strain the powder at the end with a coffee filter, but this can be messy, and we've already gotten the good stuff with only losing yield in the baster and whatever was too difficult to suck out of the jars. Every little bit helps though.
11. Pour the dark liquid in to the baking pan and PUT IT OUTSIDE to evaporate. I did this in my room with a fan and two open windows and the smell of alcohol was still overpowering, not to mention that I likely killed off a billion brain cells.
12. When the amount of liquid left is fairly low, smell the pan. You shouldn't be able to smell any alcohol, which means (I guess) that the liquid left is predominantly water. You can bring the pan in now and set a fan on it which will help it evaporate faster, especially if its cold and humid where you live Ultimately you're left with some black tar-like gunk that's sticky as hell. You should keep the fan on this stuff for at LEAST a day or two.
13. Using the razor blade, scrape the gunk off the bottom and put it on the wax paper. I found wax paper to be the only surface the tarish gunk doesn't stick on too badly. This stuff can be seriously sticky and it starts to come off all oily on your hands after you've held it for just a few seconds. I read somewhere that adding some baking powder to it can help, but I haven't tried this. My first batch was much less sticky than my most recent, and I think it had to do with my messing up at first and having good amount of the original powder in the pan, so maybe putting some powder in to the final mix is a good idea.
That's it. Now weigh the black shit and divide like so: starting weight of powder/black shit weight. That gives you extremely roughly how many grams of powder are in each gram of the tar. It's going to be less than that number, of course, but that's about the best and easiest estimate. In one of my batches, I put in 100 grams of powder and came out with 24 grams of tar, so each gram of tar represented about 4 grams of powder. You have some options now on how to consume it. I was broke by this point so I used a school account and bought some herbal supplements in capsules, emptied them out, and put the tar in them. About a gram per capsule, which worked out nicely. I was taking 5-10 capsules and tripping my face off, so so so much more than when I tried making the boiled-down soup and with little nausea to boot.
Anyways, I hope this is helpful for someone. Remember to evaporate thoroughly, the only uncertain/potentially dangerous aspect of this project is the isopropyl alcohol.