- 1 sugar cube (or 1 bar spoon simple syrup)
- 2 dashes Angostura bitter
- 2 ounces rye or bourbon
- Orange twist
- Muddle the sugar cube and bitters with one bar spoon of water at the bottom of a chilled rocks glass. (If using simple syrup, combine bitters and one bar spoon of syrup.) Add rye or bourbon. Stir.
- Add one large ice cube, or three or four smaller cubes. Stir until chilled and properly diluted, about 30 seconds. Slip orange twist on the side of the cube.