Recipe

1. Combine all the ingredients in an ice-filled glass and stir well.
2. If you don't have 1:1 simple syrup, you can make this by combining equal quantities of sugar and water in a pan and heating until the sugar dissolves.
3. Serve this cocktail in a tumbler, over one large cube or several small ones. You could even use an ice ball if you prefer.
4. Twist a piece of orange zest over the glass to release the aromatic oils.
5. Use orange peel and sprig of toasted rosemary to finish your Old Fashioned.