Ooh. I didn't think about the possibility that alcoholic drinks can taste similar to non-alcoholic ones. Okay.
Water. Before that I enjoyed Coke, Pepsi, Pepsi One, Dr. Pepper, 7 Up, Mountain Dew, Sprite, Lemonade, Sunny Delight, Koolaid, Orange Soda, Grape Soda, Strawberry Soda, and Lime Soda, but my taste buds are so used to water now the latter would probably be eck. Last time I tried Dr. Pepper I had to wash it down with half a bottle of water.