Kentucky Mule

A couple weeks ago at Big Star in Wicker Park I discovered an awesome cocktail the bar called the "Bakersfield Buck," made with bourbon, lime juice, and ginger beer (not ginger ale!).  Since then, I've been investigating whether it is a Big Star speciality or a common drink.  With a little research (see this NYT blog post), I've found it is more commonly referred to as a Kentucky Mule (much like a Dark and Stormy or a Moscow Mule)!  Being a Bluegrass-State native, I believe this calls for making the Kentucky Mule my new go-to drink...

Kentucky Mule (from http://greasyskillet.blogspot.com/2011/03/riding-kentucky-mule.html)