I found a recipe in Food and Wine magazine for a bourbon cocktail called "Indian Summer." Leslie and I tried it last night and both really enjoyed it.
1.5oz Bourbon (I used BB 2006)
1.5oz Sweet Vermouth
Twist of Lemon
Fill a pub glass 3/4 full of ice, add bourbon and vermouth and stir well. Strain into a cocktail or martini glass and garnish with twist of lemon.
I also grated a little extra lemon zest onto the finished drink. At first I was skeptical that this would be too sweet with the 1:1 ration of bourbon to vermouth, but it was a very well balanced drink with a nice caramel foundation.
This would make a nice introduction to bourbon cocktails for a non-bourbon drinker as it is sweet enough to tone down the bourbon, but not cloying, so the veteran bourbon drinker will enjoy it too.
Let me know what you think.