First of all let's cover the vodka process. I found a recipe online (never done this drink myself) but I'm familiar with the science behind it. Basically you want a whipped cream canister and a couple of nitrous oxide cartridges to be able to break down the cannabis to a molecular level so everything infuses into the drink, specially flavours. If you already decarbed your material then skip the double boiler and go straight to the strainer after the nitrous oxide
https://www.vice.com/en/article/kbkv...with-marijuana
Now for the RSO I use 99.99 lab grade ethanol (ethiloc alcohol) the one you can drink and the active ingredient in every alcohol beverage. It's not easy to find but that's the best. The second best option is grain alcohol like everclear. You want as much alcohol and the less water as possible. You will need an electric rice cooker, a big mason jar or other closed container, cheesecloth, gloves and syringes.
First you grind up the weed. You can use a blender or a regular grinder or you can even chop it with a knife. Then you place in a mason jar and fill with alcohol until completely submerged. Gotta leave it over night, shaking it a bit if you can to ensure all the resin dissolves into the alcohol.
Next day you pour everything thru the cheesecloth and use it to squeeze all the alcohol out and discard the plant material (use gloves) you are left with a greenish yellow liquid. Next step has to be done OUTSIDE because the alcohol will evaporate and can become a fire hazard in a closed room.
Pour the liquid into the rice cooker and turn it on high, it will start to evaporate the alcohol, use a spoon to stir every half hour and try to scrape the residue from the edges and disolver back into the liquid. Reducing can take several hours but eventually it will start to become thick like honey. It will bubble and stick to the spoon. Turn off the cooker and suck into the syringe (without the needle) you'll be able to fill several syringes, do it while it's still hot. Once cooled it'll become harder and won't be able to suck into the syringe.
Depending on how much weed you used it's the yield you'll get. I usually fill half gallon mason jar with ground up weed and half a gallon alcohol and make 30 to 40 1ml syringes. There will be rso left stuck in the cooker. I like to pour some fresh alcohol to clean everything up and save it for the next batch. You can also save it for drinks
Very important. NEVER EVER USE ISOPROPYL ALCOHOL. Liver turns it into acetone when consumed and you can die. Please be very careful. If you got any questions let me know
