I'd always go for Ethanol (Everclear is easy to get in the US but not in the UK you would have to source some ethanol or a very potent vodka) but I'm no expert in these things so I should wait for more opinions, DOC ...have a good one.
DOC is better discussed in the psychedelic drugs forum..
Be careful you don't do what someone did to me and (accidentally, I presume while tripping) squirt a massive overdose onto my hand, which I proceeded to lick up as I dodn't know it was an overdose (I was less than sober too..)
This will be merged with the Big & Dandy DOC thread at some point. (Check out the Psychedelic Index link at the top of the forum, it lists all the Big & Dandy threads )
Since you're new we generally wait for you to reply first though.
High proof alcohol (ethanol) would be perfect but I imagine vodka would be fine, probably even distilled water too - just afaik ethanol based solutions keep bacteria out so they're better for any sort of long term storage by far
^ Hey, I oppose throwing around that term as a pejorative! What's not to like about cocksuckers? Are you some kind of a prude? But yea, selling it as something it is not is of course a lousy & dangerous thing to do.