1 1/2 oz of Lime Juice
1 tsp of superfine sugar (or sugar)
1 dash of bitters
3 oz of club soda (or clear soda)
crushed ice (or ice)
2 oz of scotch whisky
In a shaker half-filled with ice cubes, combine lime juice, sugar, Scotch, and bitters. Shake well. Almost fill a collins glass with crushed ice. Stir until glass is frosted. Strain mixture in shaker into the glass and add the club soda.