dont' use alcohol period for bong water (person above me said good alcohol) unless you're plannin on drinking it afterwards, all you're doing is taking away from the weed, and depdending on what you use (say everclear for example) risking getting a bong blew up in your face... which may sound 'cool' to see, but i garuntee if you were on the receiving end, all that extrememly hot fire, and shattering, flying glass, would make you see otherwise.... and i've tried all kinds of stuff in bongs as the liquid... never addds a flavor to me... stick your mouth over a bottle of fruit drink, and breathe it in... now imagine the very minimal taste you may even be able to taste, about 1/4 of that you MIGHT be able to taste, over the smoke that is... people say it gives it flavor all the time, they're lying or it's in their head... you can't taste the aroma's of fruits (or w/e the drink is supposed to taste like) over the smoke.... if you REALLY want to add extra taste, your best bet is going to be 100% natural and fresh juice.... but even then it will be extremely minimal