1 1/3 oz of Lemon Juice
1 tsp of caster sugar (or sugar)
1/4 oz of egg
4 oz of soda water
1 dash of Angostura bitters
2 oz of scotch whisky
Add scotch, lemon juice, sugar, egg and bitters to a cocktail shaker. Shake and strain into a collins glass half-filled with ice. Add the soda water, and serve with a slice of orange and a muddler.