Shake, strain, straight-up, cocktail glass. Also excellent on the rocks in a double old fashioned glass. Thin grapefruit wedge garnish (optional).
Pink grapefruit version will appeal to Gin & Tonic fans
In offshore sailing, a Jackline is a rope to which a safety harness is clipped, allowing one to move about on deck in heavy seas without falling overboard. This cocktail may similarly comfort unsteady hands venturing in uncharted waters.