Navy Strength Old Fashioned

1 oz Navy strength rum, Smith & Cross
1 oz Navy strength gin, Hayman's Royal Dock
18 oz Rich demerara syrup 2:1
2 ds Bitters, Angostura
1 ds Salt Solution (light dash)
1   Orange peel
Stir, strain into old fashioned glass with a large cube or sphere. Garnish with an expressed orange swath.
Saline solution: 150g salt to 850g water, blended in a blender until dissolved
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