Use the highest proof alcohol you can, I plan to use 151 or everclear.
Also mix it up once in a while, like move the bottle around to get the alcohol inside moving a little bit.
I'm not sure if shaking it is a good idea or not, I don't know if it breaks any necessary fragile chemical bonds or anything I don't understand like that.
They should feature Marijuana on Good Eats (Food Network). That Alton Brown dude goes really in depth with the science of each ingredient, and I can only imagine the shit he could whip up. Yes, I'm faded right now.
