Sorry if I put you off there... vodka would of course be the 'economy' choice. Absinthe would me my ideal choice I suppose... never tried it though? A nice, smooth 10 year old malt whisky I have however, and most pleasant it was too. Of course the combination with cannabis smoke has (to me) not only a delicious taste, but a rather good extra 'hit' - which may not be to everyone's tastes, I do realised. I used to smoke a pipe, and rather like 'whisky flake' tobacco, especially nice with a few extra drops added. Still, each to their own as I always say...
Perhaps water might be preferable, with perhaps a drop or two of Olbas Oil? Not of course for conniseurs of fine weed - butt maybe better for anyone with breathing problems. It always amused me how dope loving 'puritans' seem to think that it is harmless, and even beneficial. Psychologically, I tend to agree (if not overdone), but lung wise I have serious doubts. Whist rolling big, fat spliffs, using 'light' cigarettes (usually ponced from me!), they merrily slip in a tine cardboard roach, then deeply inhale with great gusto... unaware that 'light cigarettes' often have just the same tobacco, but finer, more obstructive filters.
And then there are those I have known who 'give up smoking', lecture everyone tediously on their weakness and carelessness with their health, ending with ".... I only some dope these days!". THey then proceed to smoke twenty or thirty weak spliffs a day... oh well, who wants to live forever?