Take out your electric shaker. Chill it with crushed ice. Chilling the shaker before the process makes a better chilled drink.
Pour the ingredients in their right proportions into the shaker. The order of pouring does not matter. Shake vigorously to get a good mix.
Take out your best tall cocktail glasses. Pour the cocktail into them neatly. Do not add anymore ice into the glass. It has to be served straight up without any extra chill.
Garnish if you feel like, though the drink has a natural appealing look itself. A slice of lime tucked on the glass side will serve the purpose. However if you are in the mood for a fine art display then peel the lemon skin into curls, wrap them around a toothpick and let it float over the drink. Cheers to Churchill and his love for exquisite cocktails.