Carbonated Piston Slinger is scrumptious strong cocktail at 1.3 standard drinks. Built with 15ml rum 151 proof and 15ml gin sloe with 10ml lime juice as well as 20ml lime syrup including 40ml soda water also 190ml ice and best at tea time. Just fill glass with ice cubes then add rum and gin to glass and pour in lime juice. Top with sparkling water and served in a highball glass cold.