Cold Well water! The only time I couldn't stand it was when you had a well that had the "egg water" taste.
Sam, This is really off-topic but that 'egg water' taste happens when a well is tapped into a coal seam. The middle to southern part of Missouri on the Kansas border is strip mining country. The coal lies less than 50 or 80 feet under the surface. Back when wells were dug by hand they were rarely more than 40 feet deep and the spring water above the coal seam is sweet and clear. When they began to drill deep for water they would often punch through the seam and then the sulphur in the coal would taint the water with that nasty taste and smell. Even sleeving the hole didn't completely get rid of the taste. Chickens will drink it and don't seem to care but horses and most dogs shy away from it and it is bad for washing clothes in. It also makes a cows milk taste funky.. On my grandpa's farm we had three sweet wells and two springs that always ran clear.