Woodford Reserve's "The Sling"

The Sling
In an old fashioned glass muddle:
- 1 t sugar
- 1 t water
- Small piece lemon zest
Add 1.5 oz Woodford Reserve bourbon, stir and then finish with a large ice cube.
Then she will add 2 dashes of bitters and make it a bittered sling. The bittered sling evolved into the modern Old Fashioned.