water doesn't extract any cannabinoids that will get you high...thc isn't water soluable as i'm sure you already know....i would let the weed sit in some everclear for a few days, then let the everclear sit in an open container until all the alcohol evaporates, then make coffee with that...you could try that with some other stronger alcohols too, to get the flavor right...peppermint schnapps might be nice if it'll actually extract the cannabinoids