This is a nice easy one because, rather than reinvent the wheel, we'll simply refer you to the Reader Poll that we ran on this very subject back in December 2007, the results of which should still be valid now and which can be located in the Poll Archives, where we also gave some history of this elixir, plus some additional recommendations of our own as to where to find the best in town. If anyone out there's found one that we're missing, or has a special "secret ingredient" that they'd like to share from their own recipe, please pass it on so we can share.