Other than a couple of cups of coffee in the morning, water. I am lucky to get mine from (really) spring water. It is so tasty that when I go away from home I actually miss it. It comes off a deeply wooded hillside and butts up against a large granite formation. I am told that during prohibition they had a rather large distilling operation up there and it was closely guarded by stern men with shotguns. Supposedly it was the water that made it the most desired moonshine in the county. Moonshine or not it is the best tasting water I have ever had. Am I the only one who can taste the difference between water from differing places?