Instructions
- Place the sugar cube in an Old Fashioned glass.
- Add a few dashes of Angostura bitters onto the sugar.
- Muddle the sugar and bitters until the sugar has dissolved.
- Add ice cubes to the glass.
- Pour in the dark rum over the ice.
- Stir gently to combine the flavors.
- Express the oils from an orange twist over the drink, then add the twist as garnish.